tweak asserts. Found by Klockwork (www.klocwork.com)

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@8453 d0543943-73ff-0310-b7d9-9358b9ac24b2

src/switch_rtp.c

@@ -202,11 +202,11 @@ static switch_status_t ice_out(switch_rtp_t *rtp_session)
 	switch_size_t bytes;
 	switch_status_t status = SWITCH_STATUS_SUCCESS;
 	
-	WRITE_INC(rtp_session);
-	
 	switch_assert(rtp_session != NULL);
 	switch_assert(rtp_session->ice_user != NULL);
 
+	WRITE_INC(rtp_session);
+
 	if (rtp_session->stuncount != 0) {
 		rtp_session->stuncount--;
 		goto end;