Fix a compiler warning

Compilers these days are very picky about
their NULLs.

diff --git a/gtk/gtklistitemmanager.c b/gtk/gtklistitemmanager.c
index 503149ea7c45d1f9fb2660beed1434a9e48747b4..b25cac7b06ea2265034ec165e35047afceb30c5e 100644 (file)
--- a/gtk/gtklistitemmanager.c
+++ b/gtk/gtklistitemmanager.c
@@ -1293,7 +1293,7 @@ gtk_list_item_manager_ensure_items (GtkListItemManager *self,
                                                              start,
                                                              GTK_LIST_TILE_UNMATCHED_FOOTER,
                                                              GTK_LIST_TILE_HEADER);
-              g_assert (header->widget == NULL);
+              g_assert (header != NULL && header->widget == NULL);
               header->widget = GTK_WIDGET (gtk_list_item_change_get_header (change));
               if (header->widget == NULL)
                 header->widget = GTK_WIDGET (self->create_header_widget (self->widget));