quick-mode: Make sure we have a proposal before determining lifetimes

Fixes: e0dd36c9c7 ("ikev1: Get and set the lifetimes of the selected proposal/transform")

src/libcharon/sa/ikev1/tasks/quick_mode.c

@@ -1147,9 +1147,6 @@ METHOD(task_t, process_r, status_t,
 														   flags);
 			list->destroy_offset(list, offsetof(proposal_t, destroy));
 
-			get_lifetimes(this);
-			apply_lifetimes(this, sa_payload);
-
 			if (!this->proposal)
 			{
 				DBG1(DBG_IKE, "no matching proposal found, sending %N",
@@ -1158,6 +1155,9 @@ METHOD(task_t, process_r, status_t,
 			}
 			this->spi_i = this->proposal->get_spi(this->proposal);
 
+			get_lifetimes(this);
+			apply_lifetimes(this, sa_payload);
+
 			if (!get_nonce(this, &this->nonce_i, message))
 			{
 				return send_notify(this, INVALID_PAYLOAD_TYPE);