[Bug 31507] midiInOpen x64 crash due to callback address 32-bit truncation

http://bugs.winehq.org/show_bug.cgi?id=31507

--- Comment #6 from George Yohng  2012-08-20 05:34:24 CDT ---
I didn't check yet - this will require me to install the development package.
Would it be an option if I send a test executable for you to check on your end?
> From looking at the source code, I think that dwInstance variable will require

the same treatment, since in general a pointer is passed in it as well.