[gnome-contacts] Don't crash if a contact has no client types.

[Alexander Larsson <alexl src gnome org>]

commit cc21627c60aecbf3f978c75b500707a9a4f8c853
Author: Travis Reitter <treitter gmail com>
Date:   Tue Jun 28 10:09:25 2011 -0700

    Don't crash if a contact has no client types.

 src/contacts-contact.vala |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/src/contacts-contact.vala b/src/contacts-contact.vala
index 27cb8f9..d50e26c 100644
--- a/src/contacts-contact.vala
+++ b/src/contacts-contact.vala
@@ -479,7 +479,8 @@ public class Contacts.Contact : GLib.Object  {
       return false;
 
     var types = tp.contact.get_client_types ();
-    return types[0] == "phone";
+
+    return (types != null && types[0] == "phone");
   }
 
   private void update_presence () {