net/SocketAddress: use IPv[46]Address::Cast()

src/net/SocketAddress.cxx

@@ -95,13 +95,13 @@ SocketAddress::GetLocalPath() const noexcept
 bool
 SocketAddress::IsV6Any() const noexcept
 {
-	return GetFamily() == AF_INET6 && IPv6Address(*this).IsAny();
+	return GetFamily() == AF_INET6 && IPv6Address::Cast(*this).IsAny();
 }
 
 bool
 SocketAddress::IsV4Mapped() const noexcept
 {
-	return GetFamily() == AF_INET6 && IPv6Address(*this).IsV4Mapped();
+	return GetFamily() == AF_INET6 && IPv6Address::Cast(*this).IsV4Mapped();
 }
 
 unsigned
@@ -112,10 +112,10 @@ SocketAddress::GetPort() const noexcept
 
 	switch (GetFamily()) {
 	case AF_INET:
-		return IPv4Address(*this).GetPort();
+		return IPv4Address::Cast(*this).GetPort();
 
 	case AF_INET6:
-		return IPv6Address(*this).GetPort();
+		return IPv6Address::Cast(*this).GetPort();
 
 	default:
 		return 0;