[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/ipv6/route.c b/net/ipv6/route.c
index 70f760f..6264ec3 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -1760,7 +1760,7 @@
 		rtnl_unlock();
 
 		return err;
-	};
+	}
 
 	return -EINVAL;
 }