[empathy] LogWindow: don't crash when searching

[Emilio Pozuelo Monfort <epm src gnome org>]

commit 3a19d359f1cae8b2b4e6b4c31aaa193bd31a8720
Author: Emilio Pozuelo Monfort <emilio pozuelo collabora co uk>
Date:   Mon Jul 11 09:39:38 2011 +0100

    LogWindow: don't crash when searching

 libempathy-gtk/empathy-log-window.c |    5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)
---
diff --git a/libempathy-gtk/empathy-log-window.c b/libempathy-gtk/empathy-log-window.c
index 80728a3..c2a9c78 100644
--- a/libempathy-gtk/empathy-log-window.c
+++ b/libempathy-gtk/empathy-log-window.c
@@ -1947,8 +1947,9 @@ log_window_update_what_sensitivity (EmpathyLogWindow *self)
   GList *accounts, *targets, *acc, *targ;
   gboolean next;
 
-  log_window_get_selected (self, &accounts, &targets, NULL, NULL,
-      NULL, NULL);
+  if (!log_window_get_selected (self, &accounts, &targets, NULL, NULL,
+      NULL, NULL))
+    return;
 
   view = GTK_TREE_VIEW (self->priv->treeview_what);
   model = gtk_tree_view_get_model (view);