bounds_init(): Clear the image in any case.
bounds_init(): Clear the image in any case.

Whoops, forgot this part during the refactoring. This actually caused crashes when dumping the sprite boundaries for th14.

VBChunguk/thcrap,thpatch/thcrap,thpatch/thcrap,thpatch/thcrap,thpatch/thcrap,VBChunguk/thcrap,thpatch/thcrap,VBChunguk/thcrap