#7 WIN32 sndbuf file read error

[Phil Davidson]

I'm getting errors on WIN32 with the sndbuf object -
it will load .au files, but others ( wav, aiff ) are
failing.

I'm certain this was working last week. It's something
to do with the ReadFile function in util_sndfile::psf_fread
line 1187..

returns 0 ( no error ) but no bytes are read.

This works properly on macosx builds. haven't tried
linux or cygwin