addressbook: avoid ref if NULL

If pixbuf is NULL, glib will warn and return.

Refs #62204

Signed-off-by: Tristan Matthews <tristan.matthews@savoirfairelinux.com>

Change-Id: I9aefd20be471045bc8d69a9820d2f3a057473a47

plugins/addressbook/evolution/eds.c

@@ -205,9 +205,9 @@ pixbuf_from_contact(EContact *contact)
             /* Force remaining parse operations to complete */
             gdk_pixbuf_loader_close(loader, NULL);
             pixbuf = gdk_pixbuf_loader_get_pixbuf(loader);
-        }
             /* Ensure that pixbuf isn't destroyed with loader */
             g_object_ref(pixbuf);
+        }
         g_object_unref(loader);
     } else if (photo->type == E_CONTACT_PHOTO_TYPE_URI) {
         gchar *filename = g_filename_from_uri(photo->data.uri, NULL, NULL);