[boilerplate] Propagate original error from create_from_png()

During cairo_boilerplate_get_image_surface_from_png() the original status
returned by cairo_image_surface_create_from_png() could have been masked
by inappropriate context construction when flattening or extracting.
Simply check after creating the surface from the png file, and return
immediately if in error.

1 files changed, 2 insertions, 0 deletions

diff --git a/boilerplate/cairo-boilerplate.c b/boilerplate/cairo-boilerplate.c
index 1b0fa294..285b23aa 100644
--- a/boilerplate/cairo-boilerplate.c
+++ b/boilerplate/cairo-boilerplate.c
@@ -225,6 +225,8 @@ cairo_boilerplate_get_image_surface_from_png (const char *filename,
     cairo_surface_t *surface;
 
     surface = cairo_image_surface_create_from_png (filename);
+    if (cairo_surface_status (surface))
+	return surface;
 
     if (flatten) {
 	cairo_t *cr;