xplist: Prevent some more strncmp related OOB reads
xplist: Prevent some more strncmp related OOB reads

Tatsh/libplist,Tatsh/libplist,libimobiledevice-win32/libplist,Tatsh/libplist,libimobiledevice-win32/libplist,libimobiledevice-win32/libplist,libimobiledevice/libplist,libimobiledevice-win32/libplist,Tatsh/libplist,libimobiledevice/libplist,libimobiledevice/libplist