Allow NULL as 'icon_widget' in gtk_tool_button_new()

This completes the patch of
commit b8ec73a52fe3dc3012db78f45bfcafa2cb3e14ae

diff --git a/gtk/gtktoolbutton.c b/gtk/gtktoolbutton.c
index e8a6eca90eb30aa9b4f6af54a48a4ab7fe861b98..422540168f4d12804d142c7e3392839885a58c7f 100644 (file)
--- a/gtk/gtktoolbutton.c
+++ b/gtk/gtktoolbutton.c
@@ -943,7 +943,7 @@ gtk_tool_button_new (GtkWidget       *icon_widget,
 {
   GtkToolButton *button;
 
-  g_return_val_if_fail (GTK_IS_MISC (icon_widget), NULL);
+  g_return_val_if_fail (icon_widget == NULL || GTK_IS_MISC (icon_widget), NULL);
 
   button = g_object_new (GTK_TYPE_TOOL_BUTTON,
                          "label", label,