[gtk/static-analysis-fixes: 9/13] stack: Static analysis fixes

[Matthias Clasen <matthiasc src gnome org>]

commit faf56a8abe7782c643011fc75c513c8071bfcbaa
Author: Matthias Clasen <mclasen redhat com>
Date:   Mon May 3 07:35:21 2021 -0400

    stack: Static analysis fixes

 gtk/gtkstack.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/gtk/gtkstack.c b/gtk/gtkstack.c
index 4c7274d336..896a0b63de 100644
--- a/gtk/gtkstack.c
+++ b/gtk/gtkstack.c
@@ -2320,7 +2320,7 @@ gtk_stack_snapshot_cube (GtkWidget   *widget,
 
   if (priv->active_transition_type == GTK_STACK_TRANSITION_TYPE_ROTATE_LEFT)
     gtk_widget_snapshot_child (widget, priv->visible_child->widget, snapshot);
-  else
+  else if (priv->last_visible_child)
     gtk_widget_snapshot_child (widget, priv->last_visible_child->widget, snapshot);
   gtk_snapshot_restore (snapshot);