[gnome-documents] mainToolbar: Correct disconnect signal

[Alessandro Bono <abono src gnome org>]

commit 9f3673ae13d37dec5399618bb85f5675886159f9
Author: Alessandro Bono <shadow openaliasbox org>
Date:   Tue Nov 10 00:10:17 2015 +0100

    mainToolbar: Correct disconnect signal
    
    Fallout from 3934a00179c95fd4890e5fe2f4a0a902c2848599
    
    https://bugzilla.gnome.org/show_bug.cgi?id=757860

 src/mainToolbar.js |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/mainToolbar.js b/src/mainToolbar.js
index eb82ee4..055e35d 100644
--- a/src/mainToolbar.js
+++ b/src/mainToolbar.js
@@ -308,7 +308,7 @@ const OverviewToolbar = new Lang.Class({
         }
 
         if (this._viewSettingsId != 0) {
-            Application.settings.disconnect(this._viewSettingsId);
+            Application.application.disconnect(this._viewSettingsId);
             this._viewSettingsId = 0;
         }
     },