We were using an inconsistent mix of the three variants and 'volatile' should
be the most correct and portable variant.
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@27791 b3059339-0415-0410-9bf9-f77b7e298cf2
conflict with the header by the same name in loader/wine/driver.h.
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@27031 b3059339-0415-0410-9bf9-f77b7e298cf2