cairo-util: load_cairo_surface returns NULL if loading the file fails.
Otherwise a non-existent file in the configuration crashes the desktop shell.
Signed-off-by: Ustun Ergenoglu <ego@ustun.fi>
diff --git a/clients/cairo-util.c b/clients/cairo-util.c
index 1f8d307..6d5794b 100644
--- a/clients/cairo-util.c
+++ b/clients/cairo-util.c
@@ -300,6 +300,10 @@
void *data;
image = load_image(filename);
+ if (image == NULL) {
+ return NULL;
+ }
+
data = pixman_image_get_data(image);
width = pixman_image_get_width(image);
height = pixman_image_get_height(image);