Fix to possible crash in R_IsViewpointThirdPerson

Basically to explain, due to R_InterpolateView being called in ST_Drawer it can possibly make the game pass an invalid player ref to R_IsViewpointThirdPerson during the first few tics of a level. This can happen because the player mobj hasn't been created yet so the view remains uninitialized. This seems to mostly affect legacyGL shearing as far as I can tell since it calls this function.

Thanks to GenericHeroGuy for helping me figure this out.

changed title from Fix to possible crash in R_IsViewpointThirdPerson to "Fix" to possible crash in R_IsViewpointThirdPerson

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• 4294b943 - Update 2 files

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changed title from "Fix" to possible crash in R_IsViewpointThirdPerson to Fix to possible crash in R_IsViewpointThirdPerson

added 1 commit

• 9b36f980 - Whoops I forgot the chasecam assignment

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Made this not use an ugly hack by fixing it in the problem function itself.

changed the description

approved this merge request

added Bug Crash labels

mentioned in commit 3e6e24fa

merged