[evince] [libview] Don't emit selection-changed when selection doesn't change after clear_selection

[Carlos Garcia Campos <carlosgc src gnome org>]

commit b4b109f954781cdcdcfb90202868d2f7efb43e40
Author: Carlos Garcia Campos <carlosgc gnome org>
Date:   Mon Jan 11 12:18:16 2010 +0100

    [libview] Don't emit selection-changed when selection doesn't change after clear_selection

 libview/ev-view.c |   11 +++++++----
 1 files changed, 7 insertions(+), 4 deletions(-)
---
diff --git a/libview/ev-view.c b/libview/ev-view.c
index 7ef1dd8..47fb438 100644
--- a/libview/ev-view.c
+++ b/libview/ev-view.c
@@ -5454,13 +5454,16 @@ selection_free (EvViewSelection *selection)
 static void
 clear_selection (EvView *view)
 {
-	g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
-	g_list_free (view->selection_info.selections);
-	view->selection_info.selections = NULL;
+	if (view->selection_info.selections) {
+		g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
+		g_list_free (view->selection_info.selections);
+		view->selection_info.selections = NULL;
+
+		g_signal_emit (view, signals[SIGNAL_SELECTION_CHANGED], 0, NULL);
+	}
 	view->selection_info.in_selection = FALSE;
 	if (view->pixbuf_cache)
 		ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, NULL);
-	g_signal_emit (view, signals[SIGNAL_SELECTION_CHANGED], 0, NULL);
 }
 
 void