child-sa: Only reinstall VIPs if any are passed

diff --git a/src/libcharon/sa/child_sa.c b/src/libcharon/sa/child_sa.c
index 207763953dbed9c70bcf8a14339e607ecf012aae..2f61802f5effeab18af58c20ff0daef90a4c59f3 100644 (file)
--- a/src/libcharon/sa/child_sa.c
+++ b/src/libcharon/sa/child_sa.c
@@ -1605,7 +1605,10 @@ METHOD(child_sa_t, update, status_t,
 
                                /* we reinstall the virtual IP to handle interface roaming
                                 * correctly */
-                               vips->invoke_function(vips, reinstall_vip, me);
+                               if (vips)
+                               {
+                                       vips->invoke_function(vips, reinstall_vip, me);
+                               }
 
                                /* reinstall updated policies */
                                install_policies_internal(this, me, other, my_ts, other_ts,