Avoid a warning creating title button in ModestShell

diff --git a/src/gtk/modest-shell.c b/src/gtk/modest-shell.c
index 20dfa8c..6e3dd4c 100644 (file)
--- a/src/gtk/modest-shell.c
+++ b/src/gtk/modest-shell.c
@@ -181,7 +181,7 @@ modest_shell_instance_init (ModestShell *obj)
        gtk_box_pack_start (GTK_BOX (title_vbox), priv->subtitle_label, FALSE, FALSE, 0);
        gtk_widget_show (title_vbox);
 
-       priv->title_button = gtk_tool_button_new (NULL, NULL);
+       priv->title_button = gtk_tool_button_new (NULL, "");
        gtk_widget_show (GTK_WIDGET (priv->title_button));
        title_arrow = gtk_arrow_new (GTK_ARROW_DOWN, GTK_SHADOW_NONE);
        gtk_widget_show (title_arrow);