From cc0c521c4c0d6ef5fe1c7430c97259eb11c30b85 Mon Sep 17 00:00:00 2001
From: Jonh Wendell <jonh.wendell@intel.com>
Date: Mon, 16 Dec 2013 17:31:50 -0200
Subject: [PATCH] cell-renderer: Check for NULL return in vfunc start_editing()

This virtual function may return NULL, so, let's check if that's
the case and exit the function apropriately.

https://bugzilla.gnome.org/show_bug.cgi?id=720554
---
 gtk/gtkcellrenderer.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/gtk/gtkcellrenderer.c b/gtk/gtkcellrenderer.c
index 3ebe9ae5c0..aa961e711d 100644
--- a/gtk/gtkcellrenderer.c
+++ b/gtk/gtkcellrenderer.c
@@ -876,6 +876,9 @@ gtk_cell_renderer_start_editing (GtkCellRenderer      *cell,
 								(GdkRectangle *) background_area,
 								(GdkRectangle *) cell_area,
 								flags);
+  if (editable == NULL)
+    return NULL;
+
   gtk_style_context_add_class (gtk_widget_get_style_context (GTK_WIDGET (editable)),
                                GTK_STYLE_CLASS_CELL);