BLEEndPoint ref count overflow check

[lzgrablic02]

Problem

What is being fixed? Examples:

• Fixes BLEEndPoint possible refcount overflow #15579.

Change overview

Check for ref count over- and underflow.

Testing

How was this tested? (at least one bullet point required)

• WiFi-commissioned node via BLE.

[github-actions]

PR #16046: Size comparison from 190520d to e8cd248

Decreases (1 build for esp32)

platform	target	config	section	190520d	e8cd248	change	% change
esp32	all-clusters-app	m5stack	(read only)	1012887	1012883	-4	-0.0
			.flash.text	1007503	1007499	-4	-0.0

Full report (26 builds for cyw30739, efr32, esp32, k32w, linux, mbed, p6, telink)

platform	target	config	section	190520d	e8cd248	change	% change
cyw30739	light	cyw930739m2evb_01	(read/write)	598058	598058	0	0.0
			.app_xip_area	505640	505640	0	0.0
			.bss	75108	75108	0	0.0
			.data	652	652	0	0.0
			.rodata	0	0	0	0.0
			.text	0	0	0	0.0
	lock	cyw930739m2evb_01	(read/write)	555926	555926	0	0.0
			.app_xip_area	465044	465044	0	0.0
			.bss	73612	73612	0	0.0
			.data	616	616	0	0.0
			.rodata	0	0	0	0.0
			.text	0	0	0	0.0
	ota-requestor	cyw930739m2evb_01	(read/write)	566030	566030	0	0.0
			.app_xip_area	465444	465444	0	0.0
			.bss	82996	82996	0	0.0
			.data	552	552	0	0.0
			.rodata	0	0	0	0.0
			.text	112	112	0	0.0
efr32	lighting-app	BRD4161A	(read only)	919872	919872	0	0.0
			(read/write)	128264	128264	0	0.0
			.bss	126224	126224	0	0.0
			.data	2040	2040	0	0.0
			.text	919864	919864	0	0.0
		BRD4161A+rpc	(read only)	948700	948700	0	0.0
			(read/write)	144220	144220	0	0.0
			.bss	142000	142000	0	0.0
			.data	2220	2220	0	0.0
			.text	948692	948692	0	0.0
	window-app	BRD4161A	(read only)	852348	852348	0	0.0
			(read/write)	126220	126220	0	0.0
			.bss	124304	124304	0	0.0
			.data	1916	1916	0	0.0
			.text	852340	852340	0	0.0
esp32	all-clusters-app	c3devkit	(read only)	957736	957736	0	0.0
			(read/write)	1393778	1393778	0	0.0
			.dram0.bss	63576	63576	0	0.0
			.dram0.data	14220	14220	0	0.0
			.flash.rodata	197064	197064	0	0.0
			.flash.text	957736	957736	0	0.0
			.iram0.text	62016	62016	0	0.0
		m5stack	(read only)	1012887	1012883	-4	-0.0
			(read/write)	461028	461028	0	0.0
			.dram0.bss	69096	69096	0	0.0
			.dram0.data	34064	34064	0	0.0
			.flash.rodata	226032	226032	0	0.0
			.flash.text	1007503	1007499	-4	-0.0
			.iram0.text	123107	123107	0	0.0
k32w	light	k32w061+release	(read/write)	694492	694492	0	0.0
			.bss	77160	77160	0	0.0
			.data	1924	1924	0	0.0
			.text	609608	609608	0	0.0
	lock	k32w061+release	(read/write)	695292	695292	0	0.0
			.bss	77072	77072	0	0.0
			.data	1964	1964	0	0.0
			.text	610456	610456	0	0.0
linux	all-clusters-app	debug	(read only)	2430321	2430321	0	0.0
			(read/write)	145872	145872	0	0.0
			.bss	60352	60352	0	0.0
			.data	1360	1360	0	0.0
			.data.rel.ro	78424	78424	0	0.0
			.dynamic	592	592	0	0.0
			.got	4176	4176	0	0.0
			.init	27	27	0	0.0
			.init_array	936	936	0	0.0
			.rodata	205637	205637	0	0.0
			.text	2061698	2061698	0	0.0
	bridge-app	debug+rpc	(read only)	1735493	1735493	0	0.0
			(read/write)	92784	92784	0	0.0
			.bss	47624	47624	0	0.0
			.data	2016	2016	0	0.0
			.data.rel.ro	38064	38064	0	0.0
			.dynamic	592	592	0	0.0
			.got	3928	3928	0	0.0
			.init	27	27	0	0.0
			.init_array	544	544	0	0.0
			.rodata	141868	141868	0	0.0
			.text	1477653	1477653	0	0.0
	chip-tool	debug	(read only)	10093045	10093045	0	0.0
			(read/write)	358168	358168	0	0.0
			.bss	25640	25640	0	0.0
			.data	1152	1152	0	0.0
			.data.rel.ro	325352	325352	0	0.0
			.dynamic	608	608	0	0.0
			.got	4776	4776	0	0.0
			.init	27	27	0	0.0
			.init_array	616	616	0	0.0
			.rodata	514196	514196	0	0.0
			.text	8796165	8796165	0	0.0
	chip-tool-ipv6only	arm64	(read only)	9729052	9729052	0	0.0
			(read/write)	475969	475969	0	0.0
			.bss	43953	43953	0	0.0
			.data	1200	1200	0	0.0
			.data.rel.ro	371712	371712	0	0.0
			.dynamic	560	560	0	0.0
			.got	55304	55304	0	0.0
			.init	24	24	0	0.0
			.init_array	192	192	0	0.0
			.rodata	491908	491908	0	0.0
			.text	8185956	8185956	0	0.0
	door-lock-app	debug	(read only)	1949953	1949953	0	0.0
			(read/write)	119296	119296	0	0.0
			.bss	50656	50656	0	0.0
			.data	1056	1056	0	0.0
			.data.rel.ro	62184	62184	0	0.0
			.dynamic	592	592	0	0.0
			.got	4112	4112	0	0.0
			.init	27	27	0	0.0
			.init_array	664	664	0	0.0
			.rodata	173756	173756	0	0.0
			.text	1627554	1627554	0	0.0
	lighting-app	debug+rpc	(read only)	2082121	2082121	0	0.0
			(read/write)	124616	124616	0	0.0
			.bss	51456	51456	0	0.0
			.data	1536	1536	0	0.0
			.data.rel.ro	66104	66104	0	0.0
			.dynamic	608	608	0	0.0
			.got	4144	4144	0	0.0
			.init	27	27	0	0.0
			.init_array	736	736	0	0.0
			.rodata	165948	165948	0	0.0
			.text	1760514	1760514	0	0.0
	ota-provider-app	debug	(read only)	1883193	1883193	0	0.0
			(read/write)	114896	114896	0	0.0
			.bss	50464	50464	0	0.0
			.data	1320	1320	0	0.0
			.data.rel.ro	57464	57464	0	0.0
			.dynamic	608	608	0	0.0
			.got	4368	4368	0	0.0
			.init	27	27	0	0.0
			.init_array	616	616	0	0.0
			.rodata	158963	158963	0	0.0
			.text	1573506	1573506	0	0.0
	ota-requestor-app	debug	(read only)	1910801	1910801	0	0.0
			(read/write)	117864	117864	0	0.0
			.bss	51584	51584	0	0.0
			.data	1480	1480	0	0.0
			.data.rel.ro	59368	59368	0	0.0
			.dynamic	592	592	0	0.0
			.got	4160	4160	0	0.0
			.init	27	27	0	0.0
			.init_array	640	640	0	0.0
			.rodata	154924	154924	0	0.0
			.text	1605362	1605362	0	0.0
	shell	debug	(read only)	2396513	2396513	0	0.0
			(read/write)	150088	150088	0	0.0
			.bss	70472	70472	0	0.0
			.data	864	864	0	0.0
			.data.rel.ro	73064	73064	0	0.0
			.dynamic	592	592	0	0.0
			.got	4160	4160	0	0.0
			.init	27	27	0	0.0
			.init_array	920	920	0	0.0
			.rodata	205586	205586	0	0.0
			.text	2034354	2034354	0	0.0
	thermostat-no-ble	arm64	(read only)	2178620	2178620	0	0.0
			(read/write)	148817	148817	0	0.0
			.bss	65393	65393	0	0.0
			.data	1048	1048	0	0.0
			.data.rel.ro	75160	75160	0	0.0
			.dynamic	560	560	0	0.0
			.got	4240	4240	0	0.0
			.init	24	24	0	0.0
			.init_array	352	352	0	0.0
			.rodata	133116	133116	0	0.0
			.text	1826912	1826912	0	0.0
	tv-app	debug	(read only)	2622009	2622009	0	0.0
			(read/write)	250360	250360	0	0.0
			.bss	167520	167520	0	0.0
			.data	3168	3168	0	0.0
			.data.rel.ro	73624	73624	0	0.0
			.dynamic	592	592	0	0.0
			.got	4544	4544	0	0.0
			.init	27	27	0	0.0
			.init_array	880	880	0	0.0
			.rodata	199293	199293	0	0.0
			.text	2248626	2248626	0	0.0
mbed	lock-app	CY8CPROTO_062_4343W+release	(read only)	6224	6224	0	0.0
			(read/write)	2351356	2351356	0	0.0
			.bss	186212	186212	0	0.0
			.data	5792	5792	0	0.0
			.text	1313956	1313956	0	0.0
p6	all-clusters-app	default	(read/write)	2494216	2494216	0	0.0
			.bss	119640	119640	0	0.0
			.data	2680	2680	0	0.0
			.text	1452480	1452480	0	0.0
	light-app	default	(read/write)	2398296	2398296	0	0.0
			.bss	113104	113104	0	0.0
			.data	2536	2536	0	0.0
			.text	1356560	1356560	0	0.0
	lock-app	default	(read/write)	2361856	2361856	0	0.0
			.bss	112848	112848	0	0.0
			.data	2496	2496	0	0.0
			.text	1320120	1320120	0	0.0
telink	lighting-app	tlsr9518adk80d	(read/write)	888882	888882	0	0.0
			bss	86968	86968	0	0.0
			noinit	37160	37160	0	0.0
			text	628184	628184	0	0.0