[NET]: cleanup extra semicolons

Spring cleaning time...

There seems to be a lot of places in the network code that have
extra bogus semicolons after conditionals.  Most commonly is a
bogus semicolon after: switch() { }

Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/core/link_watch.c b/net/core/link_watch.c
index 8b45c9d..e3c26a9 100644
--- a/net/core/link_watch.c
+++ b/net/core/link_watch.c
@@ -79,7 +79,7 @@
 	case IF_LINK_MODE_DEFAULT:
 	default:
 		break;
-	};
+	}
 
 	dev->operstate = operstate;