[gnome-builder] buffer: dispose change monitor when relevant

[Christian Hergert <chergert src gnome org>]

commit 358a8f6c84106e9ee2ac41906aad60e785d2258c
Author: Christian Hergert <chergert redhat com>
Date:   Fri Aug 3 17:35:21 2018 -0700

    buffer: dispose change monitor when relevant

 src/libide/buffers/ide-buffer.c | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/src/libide/buffers/ide-buffer.c b/src/libide/buffers/ide-buffer.c
index 0277324cd..65809cea5 100644
--- a/src/libide/buffers/ide-buffer.c
+++ b/src/libide/buffers/ide-buffer.c
@@ -1570,6 +1570,7 @@ ide_buffer_dispose (GObject *object)
   if (priv->change_monitor != NULL)
     {
       dzl_clear_signal_handler (priv->change_monitor, &priv->change_monitor_changed_handler);
+      g_object_run_dispose (G_OBJECT (priv->change_monitor));
       g_clear_object (&priv->change_monitor);
     }