Fix critical glib warning if a BaseUI is quit without

being started.


git-svn-id: svn://localhost/ardour2/branches/3.0@12219 d708f5d6-7413-0410-9779-e7cbd77b26cf

gtk2_ardour/ardev

@@ -1,4 +1,6 @@
 #!/bin/sh
 . `dirname "$0"`/../build/gtk2_ardour/ardev_common_waf.sh
 LD_LIBRARY_PATH=/usr/local/lib:$LD_LIBRARY_PATH
+ldd $TOP/$EXECUTABLE | grep boost
+ldd $TOP/build/libs/ardour/libardour.so | grep boost
 exec $TOP/$EXECUTABLE "$@"

libs/pbd/base_ui.cc

@@ -97,7 +97,7 @@ BaseUI::run ()
 void
 BaseUI::quit ()
 {
-	if (_main_loop->is_running()) {
+	if (_main_loop && _main_loop->is_running()) {
 		_main_loop->quit ();
 		run_loop_thread->join ();
 	}