Fixed the server crash, it was an infinite loop when a revolver spawned in the xenoarcheology. It added bullets (tried, because it didn't work either) over and over nonstop.
Commented out the sprite selection on the revolvers in the xenoarcheology spawn code, it selected wrong names and they ended up being invisible. Now they will have the default sprite, the black revolver.
Reverting the comment out on the sprites and added the correct path, the xenoarcheology.dmi
Merge pull request #2739 from Aranclanos/ServerCrashFix

Server crash fix.