GZDoom tries to divide by zero when aborting a network game and crashes as a result. To reproduce, simply run gzdoom.exe -host 2 and close the window or click on "Abort Network Game" when it says "Waiting for players". The crash happens here because ticdup is zero.
Tested in GZDoom 4.8.0 and g4.8pre-501-geb56eb380.
Crash (division by zero) when aborting a network game
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Re: Crash (division by zero) when aborting a network game
fixed. Looks like one assignment to ticdup never got validated.