It is probably this checkin: http://cvs.gnome.org/bonsai/cvsview2.cgi?diff_mode=context&whitespace_mode=show&file=gifload.c&branch=&root=/cvs/gnome&subdir=/gimp/plug-ins/common&command=DIFF_FRAMESET&rev1=1.30&rev2=1.31
The guchar -> gchar change without correcting the code using the buf isn't probably good idea?
Tom