[dconf-editor] Add a link to the gtk+ TextView bug.

[Arnaud Bonatti <arnaudb src gnome org>]

commit 92ad495fe87e59faa2bf53c7d0d4e8e7915d827c
Author: Arnaud Bonatti <arnaud bonatti gmail com>
Date:   Sun Dec 3 15:55:42 2017 +0100

    Add a link to the gtk+ TextView bug.

 editor/dconf-view.vala |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/editor/dconf-view.vala b/editor/dconf-view.vala
index 615253a..bc10f67 100644
--- a/editor/dconf-view.vala
+++ b/editor/dconf-view.vala
@@ -468,6 +468,7 @@ private class KeyEditorChildArray : Frame, KeyEditorChild
         text_view.expand = true;
         text_view.wrap_mode = WrapMode.WORD;
         text_view.monospace = true;
+        // https://bugzilla.gnome.org/show_bug.cgi?id=789676
         text_view.button_press_event.connect_after (() => Gdk.EVENT_STOP);
         text_view.button_release_event.connect_after (() => Gdk.EVENT_STOP);
         scrolled_window.add (text_view);