[geary/mjog/misc-fixes] Don't block application shutdown check when mainloop is blocked

[Michael Gratton <mjog src gnome org>]

commit 992bfe8fde3d702ec0fb5b6db127a36b25400a27
Author: Michael Gratton <mike vee net>
Date:   Wed Dec 4 09:46:30 2019 +0800

    Don't block application shutdown check when mainloop is blocked

 src/client/application/application-client.vala | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/src/client/application/application-client.vala b/src/client/application/application-client.vala
index 4b573c44..8e35ad3a 100644
--- a/src/client/application/application-client.vala
+++ b/src/client/application/application-client.vala
@@ -756,7 +756,7 @@ public class Application.Client : Gtk.Application {
             // shut the whole thing down if destroy_controller() takes too
             // long to complete
             int64 start_usec = get_monotonic_time();
-            while (!controller_closed) {
+            while (!controller_closed && Gtk.events_pending()) {
                 Gtk.main_iteration();
 
                 int64 delta_usec = get_monotonic_time() - start_usec;