strings_vsprintf(): Don't replace the pointer if realloc() failed.
strings_vsprintf(): Don't replace the pointer if realloc() failed.

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