[gtk/matthiasc/for-master] modelbutton: Center titles

[Matthias Clasen <matthiasc src gnome org>]

commit efbb649eeef3a775527b2beed16c4a45962edce7
Author: Matthias Clasen <mclasen redhat com>
Date:   Wed Dec 23 00:48:43 2020 -0500

    modelbutton: Center titles
    
    The centering of titles was broken in b5b81dea7f2eff28.
    Make it mostly work again by adding an empty end indicator.
    
    Related: #3405

 gtk/gtkmodelbutton.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/gtk/gtkmodelbutton.c b/gtk/gtkmodelbutton.c
index b6ce026da9..d01b0dba3b 100644
--- a/gtk/gtkmodelbutton.c
+++ b/gtk/gtkmodelbutton.c
@@ -489,7 +489,7 @@ update_node_name (GtkModelButton *self)
     {
     case GTK_BUTTON_ROLE_TITLE:
       start_name = "arrow";
-      end_name = NULL;
+      end_name = "";
       break;
     case GTK_BUTTON_ROLE_NORMAL:
       start_name = NULL;