glx: Don't refer to the request buffer outside of {L,Unl}ockDisplay

... because that's not a safe thing to do.  The request buffer is shared
storage among all threads, and after UnlockDisplay the 'req' pointer may
point into someone else's request.

NOTE: This is a candidate for the 7.10 branch.

Signed-off-by: Adam Jackson <ajax@redhat.com>
1 file changed