[ekiga] RosterViewGtk: Fixed warning.

[Damien Sandras <dsandras src gnome org>]

commit 3b763c35a63527ac3b1911acb247a61dd91102e1
Author: Damien Sandras <dsandras seconix com>
Date:   Sun May 31 17:42:16 2015 +0200

    RosterViewGtk: Fixed warning.

 lib/engine/gui/gtk-frontend/roster-view-gtk.cpp |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/lib/engine/gui/gtk-frontend/roster-view-gtk.cpp b/lib/engine/gui/gtk-frontend/roster-view-gtk.cpp
index 26bf56f..a5dc8b4 100644
--- a/lib/engine/gui/gtk-frontend/roster-view-gtk.cpp
+++ b/lib/engine/gui/gtk-frontend/roster-view-gtk.cpp
@@ -952,7 +952,7 @@ on_cluster_added (RosterViewGtk* self,
 
 static bool
 visit_heaps (RosterViewGtk* self,
-            Ekiga::ClusterPtr cluster,
+            G_GNUC_UNUSED Ekiga::ClusterPtr cluster,
             Ekiga::HeapPtr heap)
 {
   on_heap_added (self, heap);