net: Remove unnecessary semicolons after switch statements

Also added an explicit break; to avoid
a fallthrough in net/ipv4/tcp_input.c

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/xfrm/xfrm_hash.h b/net/xfrm/xfrm_hash.h
index 1396572..8e69533 100644
--- a/net/xfrm/xfrm_hash.h
+++ b/net/xfrm/xfrm_hash.h
@@ -55,7 +55,7 @@
 	case AF_INET6:
 		h ^= __xfrm6_daddr_saddr_hash(daddr, saddr);
 		break;
-	};
+	}
 	return (h ^ (h >> 16)) & hmask;
 }
 
@@ -102,7 +102,7 @@
 
 		h = __xfrm6_daddr_saddr_hash(daddr, saddr);
 		break;
-	};
+	}
 	h ^= (h >> 16);
 	return h & hmask;
 }
@@ -119,7 +119,7 @@
 	case AF_INET6:
 		h = __xfrm6_daddr_saddr_hash(daddr, saddr);
 		break;
-	};
+	}
 	h ^= (h >> 16);
 	return h & hmask;
 }