columnview: Don't infloop when a cell is grab_focus()ed

Whoopsie.

Broken since 30d4629043f.

diff --git a/gtk/gtkcolumnviewrowwidget.c b/gtk/gtkcolumnviewrowwidget.c
index 8871ebcd0f4ff0ffec3ed1ed66d7ea64a00a651e..04991aeb91e25c6596558950c688f71ca201c202 100644 (file)
--- a/gtk/gtkcolumnviewrowwidget.c
+++ b/gtk/gtkcolumnviewrowwidget.c
@@ -254,7 +254,7 @@ gtk_column_view_row_widget_grab_focus (GtkWidget *widget)
 
   for (child = focus_child ? gtk_widget_get_next_sibling (focus_child) : gtk_widget_get_first_child (widget);
        child != focus_child;
-       child = gtk_widget_get_next_sibling (child))
+       child = child ? gtk_widget_get_next_sibling (child) : gtk_widget_get_first_child (widget))
     {
       /* When we started iterating at focus_child, we want to iterate over the rest
        * of the children, too */