[gtk/fix-memleaks: 8/11] builder: Add an assertion

[Matthias Clasen <matthiasc src gnome org>]

commit 0c6da9714749224aba625fe47b6ee68c1fdaf811
Author: Matthias Clasen <mclasen redhat com>
Date:   Sat Mar 27 18:39:37 2021 -0400

    builder: Add an assertion
    
    This case is clearly not meant to happen.
    Assert that it doesn't.

 gtk/gtkbuilder.c | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/gtk/gtkbuilder.c b/gtk/gtkbuilder.c
index 6f56a196c5..8a92d93fe4 100644
--- a/gtk/gtkbuilder.c
+++ b/gtk/gtkbuilder.c
@@ -1145,6 +1145,8 @@ gtk_builder_create_bindings (GtkBuilder  *builder,
 
           free_binding_expression_info (info);
         }
+      else
+        g_assert_not_reached ();
     }
 
   g_slist_free (priv->bindings);