[libchamplain] Check whether timeout exists before destroying it

[Jiří Techet <jiritechet src gnome org>]

commit 99bf4aaa85bc0e873011b7f30ee9b1acebc74bc6
Author: Jiří Techet <techet gmail com>
Date:   Tue May 7 22:20:14 2013 +0200

    Check whether timeout exists before destroying it

 champlain/champlain-view.c |   10 +++++++---
 1 files changed, 7 insertions(+), 3 deletions(-)
---
diff --git a/champlain/champlain-view.c b/champlain/champlain-view.c
index c3381ea..cc3e284 100644
--- a/champlain/champlain-view.c
+++ b/champlain/champlain-view.c
@@ -331,9 +331,12 @@ panning_completed (G_GNUC_UNUSED ChamplainKineticScrollView *scroll,
 
   ChamplainViewPrivate *priv = view->priv;
   gdouble x, y;
-
-  g_source_remove (priv->redraw_timeout);
-  priv->redraw_timeout = 0;
+  
+  if (priv->redraw_timeout != 0)
+    {
+      g_source_remove (priv->redraw_timeout);
+      priv->redraw_timeout = 0;
+    }
 
   champlain_viewport_get_origin (CHAMPLAIN_VIEWPORT (priv->viewport), &x, &y);
 
@@ -1025,6 +1028,7 @@ champlain_view_init (ChamplainView *view)
   priv->bg_offset_x = 0;
   priv->bg_offset_y = 0;
   priv->location_updated = FALSE;
+  priv->redraw_timeout = 0;
 
   clutter_actor_set_background_color (CLUTTER_ACTOR (view), &color);