[Bug 27531] Magic - DotP 2012 crash in gameoverlayrenderer

[wine-bugs at winehq.org]

http://bugs.winehq.org/show_bug.cgi?id=27531

--- Comment #7 from Andrew Eikum <aeikum at codeweavers.com> 2011-06-20 09:30:49 CDT ---
Created an attachment (id=35211)
 --> (http://bugs.winehq.org/attachment.cgi?id=35211)
mmdevapi: Fix refcounts in IAudioClient::GetService

This is an updated version of the patch for Bug 27511. Commit 6dac4d713ce9b
introduced the bug. In 6dac4d713ce9b, we allow NULL clients in
AudioSessionWrappers, and so we need to check that we have a valid client
before trying to release it in IAudioSessionControl::Release. The other drivers
do that correctly, but I missed adding the check to winecoreaudio. This patch
adds it, in addition to fixing the other refcounting bug from 27511.

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