net: Fix coccinelle warning

kbuild test robot says:

>coccinelle warnings: (new ones prefixed by >>)
>>> net/core/dev.c:1588:2-3: Unneeded semicolon

So, let's remove it.

Reported-by: kbuild test robot <[e-mail]>
Signed-off-by: Kirill Tkhai <[e-mail]>
Signed-off-by: David S. Miller <[e-mail]>

net/core/dev.c

···
 	N(UDP_TUNNEL_DROP_INFO) N(CHANGE_TX_QUEUE_LEN)
 	N(CVLAN_FILTER_PUSH_INFO) N(CVLAN_FILTER_DROP_INFO)
 	N(SVLAN_FILTER_PUSH_INFO) N(SVLAN_FILTER_DROP_INFO)
-	};
+	}
 #undef N
 	return "UNKNOWN_NETDEV_EVENT";
 }