[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>

net/sched/cls_u32.c

@@ -436,7 +436,7 @@ static void u32_destroy(struct tcf_proto *tp)
 			BUG_TRAP(ht->refcnt == 0);
 
 			kfree(ht);
-		};
+		}
 
 		kfree(tp_c);
 	}