centerbox: Avoid accessing unset widgets

diff --git a/gtk/gtkcenterbox.c b/gtk/gtkcenterbox.c
index 2e15f04ff774273dea018d09778fc7089230dd63..4a65b9d96aa33fb6fd5dd6888f9695235c208eee 100644 (file)
--- a/gtk/gtkcenterbox.c
+++ b/gtk/gtkcenterbox.c
@@ -448,7 +448,7 @@ gtk_center_box_size_allocate (GtkWidget     *widget,
 
       for (i = 0; i < 3; i++)
         {
-          if (gtk_widget_get_valign (child[i]) == GTK_ALIGN_BASELINE)
+          if (child[i] && gtk_widget_get_valign (child[i]) == GTK_ALIGN_BASELINE)
             {
               int child_min_height, child_nat_height;
               int child_min_baseline, child_nat_baseline;