can: j1939: j1939_session_completed(): use consistent name se_skb for the session skb

This patch changes the name of the "skb" variable in
j1939_session_completed() to "se_skb" as it's the session skb. The
same name is used in other functions for the session skb.

Cc: Robin van der Gracht <robin@protonic.nl>
Cc: Oleksij Rempel <o.rempel@pengutronix.de>
Link: https://lore.kernel.org/r/20210616102811.2449426-4-mkl@pengutronix.deSigned-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

net/can/j1939/transport.c

@@ -1191,13 +1191,13 @@ static enum hrtimer_restart j1939_tp_txtimer(struct hrtimer *hrtimer)
 
 static void j1939_session_completed(struct j1939_session *session)
 {
-	struct sk_buff *skb;
+	struct sk_buff *se_skb;
 
 	if (!session->transmission) {
-		skb = j1939_session_skb_get(session);
+		se_skb = j1939_session_skb_get(session);
 		/* distribute among j1939 receivers */
-		j1939_sk_recv(session->priv, skb);
-		consume_skb(skb);
+		j1939_sk_recv(session->priv, se_skb);
+		consume_skb(se_skb);
 	}
 
 	j1939_session_deactivate_activate_next(session);