Always wait for DataReady() on Windows WaveOut.

Only WaveOut still needs this hack and since all renderer clients
now use the shared memory marker we can always wait for it.

I suspect on low end machines this timeout is leading to pops and
clicks for some users on XP.

TEST=audio still works.

Review URL:

git-svn-id: svn:// 0039d316-1c4b-4281-b951-d872f2087c98
7 files changed