Bug 1717685 - Silently handle NOTHING_TO_DO as SUCCESS when replaying a recording, rather than asserting on it. r=jrmuizel

Differential Revision: https://phabricator.services.mozilla.com/D119398

gfx/cairo/cairo/src/cairo-recording-surface.c

@@ -1995,6 +1995,8 @@ _cairo_recording_surface_replay_internal (cairo_recording_surface_t	*surface,
 	    } else if (status == CAIRO_INT_STATUS_IMAGE_FALLBACK) {
 		command->header.region = CAIRO_RECORDING_REGION_IMAGE_FALLBACK;
 		status = CAIRO_INT_STATUS_SUCCESS;
+	    } else if (status == CAIRO_INT_STATUS_NOTHING_TO_DO) {
+		status = CAIRO_INT_STATUS_SUCCESS;
 	    } else {
 		assert (_cairo_int_status_is_error (status));
 	    }