reftests: Don't crash if no node

If we have no node, don't crash when trying to save the node file.

Instead, write an empty file.

diff --git a/testsuite/reftests/gtk-reftest.c b/testsuite/reftests/gtk-reftest.c
index 2bf3fcc5f852cb97192606c34ae101173076f1d0..b3f9774c73c91bfcd0be472caccbbdbdbbd62046 100644 (file)
--- a/testsuite/reftests/gtk-reftest.c
+++ b/testsuite/reftests/gtk-reftest.c
@@ -311,7 +311,10 @@ save_node (GskRenderNode *node,
     }
 
   g_test_message ("Storing test result node at %s", filename);
-  bytes = gsk_render_node_serialize (node);
+  if (node)
+    bytes = gsk_render_node_serialize (node);
+  else
+    bytes = g_bytes_new ("", 0);
   ret = g_file_set_contents (filename,
                              g_bytes_get_data (bytes, NULL),
                              g_bytes_get_size (bytes),