added kludge for buggy soundfiler from SGI; when reading 0 frames, just set file pointer correctly instead of returning the complete file.
added kludge for buggy soundfiler from SGI; when reading 0 frames,
just set file pointer correctly instead of returning the complete
file.

sk-/python2.7-type-annotator,sk-/python2.7-type-annotator,sk-/python2.7-type-annotator