[gnome-notes] biji-timeout: connect "shutdown" signal handler only once

[Isaque Galdino de Araujo <igaldino src gnome org>]

commit 8491d75bf892d6c8ebf0127ed2b0fb31a6d3c913
Author: Mohammed Sadiq <sadiq sadiqpk org>
Date:   Wed Mar 17 18:57:42 2021 +0530

    biji-timeout: connect "shutdown" signal handler only once
    
    Otherwise the callback may run multiple times which is not desired

 src/libbiji/biji-timeout.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)
---
diff --git a/src/libbiji/biji-timeout.c b/src/libbiji/biji-timeout.c
index 4176e6f..6e83da9 100644
--- a/src/libbiji/biji-timeout.c
+++ b/src/libbiji/biji-timeout.c
@@ -119,6 +119,7 @@ biji_timeout_reset (BijiTimeout *self, guint millis)
        millis, (GSourceFunc) biji_timeout_callback, self);
 
   /* Ensure to perform timeout if main loop ends */
-  self->quit = g_signal_connect_swapped (g_application_get_default(), "shutdown",
-                                         G_CALLBACK (biji_timeout_expired), self);
+  if (!self->quit)
+    self->quit = g_signal_connect_swapped (g_application_get_default(), "shutdown",
+                                           G_CALLBACK (biji_timeout_expired), self);
 }