[Bug]: Player can become immortal when changing group right after fast travelling

[thegamecracks]

Describe the bug

When fast travelling, it is possible to become permanently immune to damage when changing groups soon after fast travel has completed.

From a cursory glance at the source code, I think it might be due to fn_fastTravelRadio.sqf not keeping track of the group's original units before it runs _x allowDamage true, letting the player bypass it by changing group:

A3-Antistasi/A3A/addons/core/functions/Dialogs/fn_fastTravelRadio.sqf

Lines 151 to 152 in 6a9361c

	sleep 5;
	{_x allowDamage true} forEach units _groupX;

If this theory is correct, it should be fixable by storing units _groupX in a variable instead of re-evaluating it across the file.

How to reproduce

1. Start a multiplayer game
2. Make a new group in the [U] Group Management dialog
3. Start fast travelling to a location like HQ
4. Once it finishes fast travelling, open Group Management, leave the group, and create a new group (verify that the group name has changed)
5. After some time, check isDamageAllowed player in debug console

Version

3.5.1.e520f09

Have you altered the code?

No

What i have changed

No response

Map

Tanoa

What server?

Private dedicated server

Time bug occured (Server time/UTC)

No response

Mods

No response

Additional context

No response

[jaj22]

fastTravelRadio needs a rewrite, but if that's not done before the next release then we can quick-fix.

I feel like I've written this exact thing before for the same function...