siprec: do not require SDP for a 200 OK

This should be OK if the SDP was completed on the 183.

modules/siprec/siprec_logic.c

@@ -621,7 +621,6 @@ static void tm_update_recording(struct cell *t, int type, struct tmcb_params *ps
 
 void tm_start_recording(struct cell *t, int type, struct tmcb_params *ps)
 {
-	str *body;
 	struct src_sess *ss;
 
 	if (!is_invite(t))
@@ -633,11 +632,6 @@ void tm_start_recording(struct cell *t, int type, struct tmcb_params *ps)
 		return;
 	}
 
-	/* check if we have a reply with body */
-	body = get_body_part(ps->rpl, TYPE_APPLICATION, SUBTYPE_SDP);
-	if (!body || body->len == 0)
-		return;
-
 	/* engage only on successful calls */
 	SIPREC_LOCK(ss);
 	/* if session has been started, do not start it again */