Make child zombies be made of zombie meat too.

mtypedef.cpp

@@ -459,7 +459,7 @@ A horrifying child zombie, you feel\n\
a twinge of remorse looking at it."
);
FLAGS(MF_SEES, MF_HEARS, MF_SMELLS, MF_STUMBLES, MF_WARM, MF_BASHES, MF_BLEED,
      MF_GUILT, MF_NO_BREATHE, MF_VIS30);
      MF_POISON, MF_GUILT, MF_NO_BREATHE, MF_VIS30);
CATEGORIES(MC_CLASSIC);