[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/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
index d1604f5..2fbfc2e 100644
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -2708,7 +2708,7 @@
 		default:
 			tcp_ratehalving_spur_to_response(sk);
 			break;
-		};
+		}
 		tp->frto_counter = 0;
 	}
 	return 0;
@@ -2915,10 +2915,11 @@
 					 */
 					break;
 #endif
-				};
+				}
+
 				ptr+=opsize-2;
 				length-=opsize;
-		};
+		}
 	}
 }
 
@@ -3124,7 +3125,7 @@
 			printk(KERN_ERR "%s: Impossible, sk->sk_state=%d\n",
 			       __FUNCTION__, sk->sk_state);
 			break;
-	};
+	}
 
 	/* It _is_ possible, that we have something out-of-order _after_ FIN.
 	 * Probably, we should reset in this case. For now drop them.