since it's now statically allocated and will not be reallocated if a new
allocation comes along.
This also fixes an issue where the mutex would not always be properly
unlocked, leading to deadlocks. I thought I'd committed that ages ago,
but obviously not, and it broke CineForm initialization.
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@30957 b3059339-0415-0410-9bf9-f77b7e298cf2