[gtk/pick-insensitive2] Keep a drawable check in gtk_widget_contains

[Matthias Clasen <matthiasc src gnome org>]

commit 1b362d1f01f114a6d5a324158a50a90e6b9a010b
Author: Matthias Clasen <mclasen redhat com>
Date:   Sun Apr 7 20:34:12 2019 +0000

    Keep a drawable check in gtk_widget_contains
    
    If the widget is not drawable, it probably doesn't have
    an allocation, so asking the question does not make much
    sense.

 gtk/gtkwidget.c | 3 +++
 1 file changed, 3 insertions(+)
---
diff --git a/gtk/gtkwidget.c b/gtk/gtkwidget.c
index f7b2087914..ff728fed8b 100644
--- a/gtk/gtkwidget.c
+++ b/gtk/gtkwidget.c
@@ -10998,6 +10998,9 @@ gtk_widget_contains (GtkWidget  *widget,
 {
   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
 
+  if (!_gtk_widget_is_drawable (widget))
+    return FALSE;
+
   return GTK_WIDGET_GET_CLASS (widget)->contains (widget, x, y);
 }