[Bug 12804] winecfg: pressing enter in library override closes winecfg

http://bugs.winehq.org/show_bug.cgi?id=12804

--- Comment #25 from Rosanne DiMesio  ---
This bug is not just a minor annoyance; because of it, inexperienced users
sometimes think they've set an override when they haven't, and then report on
the forum or here that they did try a recommended native dll, but it didn't
solve their problem. The net result is a lot of wasted time and confusion for
those users and the people trying to help them.