Fix scientist's sound mask. Same as https://github.com/ValveSoftware/halflife/issues/2982.

dlls/scientist.cpp

@@ -761,6 +761,9 @@ int CScientist::ISoundMask( void )
 {
 	return bits_SOUND_WORLD |
 			bits_SOUND_COMBAT |
+			bits_SOUND_CARCASS |
+			bits_SOUND_MEAT |
+			bits_SOUND_GARBAGE |
 			bits_SOUND_DANGER |
 			bits_SOUND_PLAYER;
 }