xquartz: Ensure that NSRunAlertPanel() is run on the main thread
Fixes: https://github.com/XQuartz/XQuartz/issues/30 Signed-off-by: Jeremy Huddleston Sequoia jeremyhu@apple.com
Fixes: https://github.com/XQuartz/XQuartz/issues/30 Signed-off-by: Jeremy Huddleston Sequoia jeremyhu@apple.com