[gnome-panel] libpanel-applet: Fix crashes in applets on background changes

[Vincent Untz <vuntz src gnome org>]

commit 88b9beeb8ab69072fe6912af33c620143d17b0a3
Author: Vincent Untz <vuntz gnome org>
Date:   Tue Feb 1 23:13:09 2011 +0100

    libpanel-applet: Fix crashes in applets on background changes
    
    We could return a random value from
    panel_applet_get_pattern_from_pixmap(), and that was very nasty.

 libpanel-applet/panel-applet.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/libpanel-applet/panel-applet.c b/libpanel-applet/panel-applet.c
index eb4bed2..fb9db37 100644
--- a/libpanel-applet/panel-applet.c
+++ b/libpanel-applet/panel-applet.c
@@ -1415,6 +1415,8 @@ panel_applet_get_pattern_from_pixmap (PanelApplet    *applet,
 
         cairo_surface_destroy (background);
 
+	pattern = NULL;
+
         if (cairo_status (cr) == CAIRO_STATUS_SUCCESS) {
                 pattern = cairo_pattern_create_for_surface (surface);
                 cairo_matrix_init_translate (&matrix, 0, 0);