[Bug 21609] Multiple games loose most sound effects or crash

http://bugs.winehq.org/show_bug.cgi?id=21609

--- Comment #33 from Eric Pouech   2010-06-09 14:18:34 ---
to be clear on what happens:
- before commit listed in comment #1, the app used to install an ioproc, and
mmio code was in all cases trying to use advInfo[0] as an HFILE
- dwSizeFile computation was wrong, as it was considering advInfo[0] (for
DOSMEM procs) to be a HANDLE (where it was a HFILE)

- the commit listed in comment #1, fixed the last part (always considers
advInfo[0] as a HFILE), but was doing it for kinds of ioproc

the tentative patch always ask the ioproc for the seek information, which
should be more correct