Ancient issue in making screendumps in Blender. It used to support making dumps of popup menus, but that disappeared a while ago. However, when you press CTRL+F3 in a menu now, Blender hangs in some eternal loop in ghost. This commit fixes making menu screendumps (nice for docs!). - press CTRL+F3 *twice* for an exact copy of a menu. (first press exits menu, 2nd press opens filewindow) - note, it is ALT+CTRL+F3 in OSX - what is saved is only the topmost open level of a menu - full-screen dumps work too by holding SHIFT extra.