[cairo-font-options] Check for the nil-object.

The design is for the user to create a cairo_font_options_t object with
cairo_font_options_create() and then is free to use it with any Cairo
operation. This requires us to check when we may be about to overwrite
the read-only nil object.

1 files changed, 5 insertions, 0 deletions

diff --git a/src/cairo-font-face.c b/src/cairo-font-face.c
index f254c3b7e..3b6dab3b6 100644
--- a/src/cairo-font-face.c
+++ b/src/cairo-font-face.c
@@ -455,6 +455,11 @@ _cairo_toy_font_face_scaled_font_create (void                *abstract_font_face
 {
     cairo_toy_font_face_t *font_face = abstract_font_face;
     const cairo_scaled_font_backend_t * backend = CAIRO_SCALED_FONT_BACKEND_DEFAULT;
+    cairo_status_t status;
+
+    status = cairo_font_options_status ((cairo_font_options_t *) options);
+    if (status)
+	return status;
 
     return backend->create_toy (font_face,
 				font_matrix, ctm, options, scaled_font);