ovn-nbctl: Fix leak of array of new policies.

CC: Tao YunXiang <taoyunxiang@cmss.chinamobile.com>
Fixes: 5820502 ("ovn-nbctl.c: Fix lr-policy-del command")
Acked-by: Dumitru Ceara <dceara@redhat.com>
Signed-off-by: Ilya Maximets <i.maximets@ovn.org>
Signed-off-by: Numan Siddique <numans@ovn.org>

utilities/ovn-nbctl.c

@@ -3758,6 +3758,7 @@ nbctl_lr_policy_del(struct ctl_context *ctx)
                 if (!shash_find(&ctx->options, "--if-exists")) {
                     ctl_error(ctx, "Logical router policy uuid is not found.");
                 }
+                free(new_policies);
                 return;
             }