[gitg] Check the url introduced is supported

[Ignacio Casal Quinteiro <icq src gnome org>]

commit 373d9ad1ffbae78a9f3fff8ce2253092e5837359
Author: Jose Manuel Pintor Freire <jmpintorfreire gmail com>
Date:   Tue Apr 16 16:06:58 2013 +0200

    Check the url introduced is supported

 gitg/gitg-window.vala | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/gitg/gitg-window.vala b/gitg/gitg-window.vala
index 3d3b02a..04f9aa5 100644
--- a/gitg/gitg-window.vala
+++ b/gitg/gitg-window.vala
@@ -208,7 +208,7 @@ public class Window : Gtk.ApplicationWindow, GitgExt.Application, Initable, Gtk.
                dlg.set_transient_for(this);
 
                entry_url.changed.connect((e) => {
-                       dlg.set_response_sensitive(Gtk.ResponseType.OK, entry_url.text_length > 0);
+                       dlg.set_response_sensitive(Gtk.ResponseType.OK, 
Ggit.Remote.is_supported_url(entry_url.get_text()));
                });
 
                dlg.response.connect((d, id) => {