Fix instances of null ptr deref in showobj()

Interrupt / systemshock

Shockolate - A minimalist and cross platform System Shock source port.

GNU General Public License v3.0

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Fix instances of null ptr deref in showobj() #215

Closed donnierussellii closed 5 years ago

donnierussellii commented 5 years ago

If animated screens on walls don't load for whatever reason, showobj() still tries to draw them with a null ptr, causing a crash. 9 out of 10 players agree, no screen is better than crash.