Remove addrlen switch duplication

[skliper]

Is your feature request related to a problem? Please describe.
Switch to get addrlen repeated multiple times:

osal/src/os/portable/os-impl-bsd-sockets.c

Lines 188 to 201 in ead5723

	switch (sa->sa_family)
	{
	case AF_INET:
	addrlen = sizeof(struct sockaddr_in);
	break;
	#ifdef OS_NETWORK_SUPPORTS_IPV6
	case AF_INET6:
	addrlen = sizeof(struct sockaddr_in6);
	break;
	#endif
	default:
	addrlen = 0;
	break;
	}

osal/src/os/portable/os-impl-bsd-sockets.c

Lines 248 to 262 in ead5723

	sa = (const struct sockaddr *)&Addr->AddrData;
	switch (sa->sa_family)
	{
	case AF_INET:
	slen = sizeof(struct sockaddr_in);
	break;
	#ifdef OS_NETWORK_SUPPORTS_IPV6
	case AF_INET6:
	slen = sizeof(struct sockaddr_in6);
	break;
	#endif
	default:
	slen = 0;
	break;
	}

osal/src/os/portable/os-impl-bsd-sockets.c

Lines 484 to 498 in ead5723

	sa = (const struct sockaddr *)&RemoteAddr->AddrData;
	switch (sa->sa_family)
	{
	case AF_INET:
	addrlen = sizeof(struct sockaddr_in);
	break;
	#ifdef OS_NETWORK_SUPPORTS_IPV6
	case AF_INET6:
	addrlen = sizeof(struct sockaddr_in6);
	break;
	#endif
	default:
	addrlen = 0;
	break;
	}

osal/src/os/portable/os-impl-bsd-sockets.c

Lines 545 to 561 in ead5723

	switch (Domain)
	{
	case OS_SocketDomain_INET:
	sa_family = AF_INET;
	addrlen = sizeof(struct sockaddr_in);
	break;
	#ifdef OS_NETWORK_SUPPORTS_IPV6
	case OS_SocketDomain_INET6:
	sa_family = AF_INET6;
	addrlen = sizeof(struct sockaddr_in6);
	break;
	#endif
	default:
	sa_family = 0;
	addrlen = 0;
	break;
	}

Describe the solution you'd like
Calculate once and store or implement once and inline

Describe alternatives you've considered
Leave as-is (future work)

Additional context
None

Requester Info
Jacob Hageman - NASA/GSFC, OSAL code review