[gnome-contacts] contacts-store: Check if new individual is not empty

[Niels De Graef <nielsdg src gnome org>]

commit 6883d4fa2a1b3803896a5f5737df765d8f6f6f62
Author: Krifa75 <yahiaoui fakhri gmail com>
Date:   Wed Sep 22 23:31:35 2021 +0200

    contacts-store: Check if new individual is not empty
    
    When deleting a contact the changes may contains empty value which triggers a warning when deleting one

 src/contacts-store.vala | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
---
diff --git a/src/contacts-store.vala b/src/contacts-store.vala
index a9c6a57b..91e99e5a 100644
--- a/src/contacts-store.vala
+++ b/src/contacts-store.vala
@@ -144,7 +144,8 @@ public class Contacts.Store : GLib.Object {
       if (i != null)
         to_remove.add (i);
       foreach (var new_i in changes[i]) {
-        to_add.add (new_i);
+        if (new_i != null)
+          to_add.add (new_i);
       }
     }