fix bug where we couldn't rewind a file that reached EOF, which can happen with < 92-byte PIC,PNM,HDR,TGA

adjust credits

fix bug in reedbeta patch

It expects constants. The long way compiles (but I haven't actually called this function yet)

The warning concerns the return value of stbi_err, which is an int, being converted to a pointer. In VS2015 it seems casting directly from a 32-bit int to a 64-bit pointer triggers this warning. Worked around by first converting to a 64-bit int (here size_t) and then to a pointer.

fix a few crash bugs with invalid stb_vorbis files (reported by Philip Bennefall, found using a fuzz tester)

test program for seeking (stb)

- Fixed possible memory leak.
- Fix for transparent backgrounds.
- Adapted internal function to allow proper animation loading.

actually want