[#8354] Blender or Python25.dll crash on... quit, reported by David B. (myvain) The BPy_FreeButtonsList() function is also called after we call Py_Finalize(). Calling PyGILState_Ensure()/Release() there crashes Blender. Added a test to prevent this, but note that function still runs Python API code to free a buttons list. Doesn't seem to give problems, though. Thanks, David.