[gtk+/gtk-3-4] gtk: Fix warnings for some uses of GtkLinkButton

[Matthias Clasen <matthiasc src gnome org>]

commit c2d436bafbbe8447e6eb4598b360abfc7a7f1e89
Author: Bastien Nocera <hadess hadess net>
Date:   Thu May 10 15:15:43 2012 +0100

    gtk: Fix warnings for some uses of GtkLinkButton
    
    Not setting a URI but catching the activate-link signal is a
    valid use of GtkLinkButton, but we shouldn't allow showing a
    popup menu which offers to copy the URI if there's none.

 gtk/gtklinkbutton.c |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)
---
diff --git a/gtk/gtklinkbutton.c b/gtk/gtklinkbutton.c
index 15a52f6..b5981c7 100644
--- a/gtk/gtklinkbutton.c
+++ b/gtk/gtklinkbutton.c
@@ -526,7 +526,10 @@ gtk_link_button_button_press (GtkWidget      *widget,
   if (!gtk_widget_has_focus (widget))
     gtk_widget_grab_focus (widget);
 
-  if (gdk_event_triggers_context_menu ((GdkEvent *) event))
+  /* Don't popup the menu if there's no URI set,
+   * otherwise the menu item will trigger a warning */
+  if (gdk_event_triggers_context_menu ((GdkEvent *) event) &&
+      GTK_LINK_BUTTON (widget)->priv->uri != NULL)
     {
       gtk_link_button_do_popup (GTK_LINK_BUTTON (widget), event);