Fix pppoe_dispatch_disc_pkt definition to be in accordance with style(9)

[Vitaliy Makkoveev]

Subj.

Index: sys/net/if_pppoe.c
===================================================================
RCS file: /cvs/src/sys/net/if_pppoe.c,v
retrieving revision 1.74
diff -u -p -r1.74 if_pppoe.c
--- sys/net/if_pppoe.c  30 Dec 2020 12:10:39 -0000      1.74
+++ sys/net/if_pppoe.c  30 Dec 2020 12:31:29 -0000
@@ -357,7 +357,8 @@ pppoeintr(void)
 }
 
 /* Analyze and handle a single received packet while not in session state. */
-static void pppoe_dispatch_disc_pkt(struct mbuf *m)
+static void
+pppoe_dispatch_disc_pkt(struct mbuf *m)
 {
        struct pppoe_softc *sc;
        struct pppoehdr *ph;