(svn r14610) -Fix [FS#2415]: possible stack corruption when reading corrupted sprites.
-Change: harden the sprite reading routine against corrupt sprites.
Makefile*
bin/*
!bin/data/chars.grf
!bin/data/openttdd.grf
!bin/data/openttdw.grf
!bin/data/opntitle.grf
!bin/scenario/README
!bin/scripts*
config.*
objs/*
src/rev.cpp