wined3d: Make sure we have an active GL context before calling surface_remove_pbo().
[wine] / dlls / msacm.dll16 /
drwxr-xr-x   ..
-rw-r--r-- 344 Makefile.in
-rw-r--r-- 12807 msacm.c
-rw-r--r-- 2335 msacm.dll16.spec
-rw-r--r-- 8440 wineacm16.h