[gnome-contacts] Fixing bug Crash when adding to My Contacts.

[Alexander Larsson <alexl src gnome org>]

commit ba0de04e1cbee48a087149015306e7969f641889
Author: Erick PÃrez Castellanos <erick red gmail com>
Date:   Thu Mar 1 09:39:59 2012 -0500

    Fixing bug Crash when adding to My Contacts.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=670880

 src/contacts-linking.vala |    5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)
---
diff --git a/src/contacts-linking.vala b/src/contacts-linking.vala
index 1b63ae0..e2bf76b 100644
--- a/src/contacts-linking.vala
+++ b/src/contacts-linking.vala
@@ -547,9 +547,10 @@ namespace Contacts {
     Set<PersonaAttribute>? linkables = null;
 
     // Remove all linkable data from each contact that is already in the other contact
-    main_linkables.remove_all (other_linkables);
-    if (other_linkables != null)
+    if (other_linkables != null) {
+      main_linkables.remove_all (other_linkables);
       other_linkables.remove_all (main_linkables);
+    }
 
     Persona? write_persona = null;
     foreach (var p1 in main.individual.personas) {