Change history icon if theme have 'document-open-recent' icon.

src/gui_menu_builder.py

@@ -253,7 +253,8 @@ control=None, gc_contact=None, is_anonymous=True):
             account)
     history_menuitem.connect('activate', roster.on_history, contact, account)
     if gtkgui_helpers.gtk_icon_theme.has_icon('document-open-recent'):
-        gtkgui_helpers.add_image_to_menuitem(history_menuitem, 'bookmark-new')
+        gtkgui_helpers.add_image_to_menuitem(history_menuitem,
+            'document-open-recent')
 
     if control:
         convert_to_gc_menuitem.connect('activate',