cssnodedeclaration: Only set the id on the widget path if we have one

Widget paths don't like NULL.

diff --git a/gtk/gtkcssnodedeclaration.c b/gtk/gtkcssnodedeclaration.c
index 99ff6b5df18f4912663754c3c8ad1483019f71eb..bc139ffe7ab624941accbc74eb05fa43d0e299e8 100644 (file)
--- a/gtk/gtkcssnodedeclaration.c
+++ b/gtk/gtkcssnodedeclaration.c
@@ -623,7 +623,8 @@ gtk_css_node_declaration_add_to_widget_path (const GtkCssNodeDeclaration *decl,
 
   /* Set name and id */
   gtk_widget_path_iter_set_object_name (path, pos, decl->name);
-  gtk_widget_path_iter_set_name (path, pos, decl->id);
+  if (decl->id)
+    gtk_widget_path_iter_set_name (path, pos, decl->id);
 
   /* Set widget regions */
   regions = get_regions (decl);