const_cast can be removed now that cmatchexpression::matches is const

[edlongman]

inet/src/inet/common/packet/PacketFilter.cc

Lines 30 to 40 in 5b3f035

	bool PacketFilter::matches(const cPacket *cpacket) const
	{
	MatchableObject matchableObject(MatchableObject::ATTRIBUTE_FULLNAME, cpacket);
	// TODO: eliminate const_cast when cMatchExpression::matches becomes const
	if (!const_cast<PacketFilter *>(this)->packetMatchExpression.matches(&matchableObject))
	return false;
	else if (auto packet = dynamic_cast<const Packet *>(cpacket)) {
	PacketDissectorCallback callback(*this);
	return callback.matches(packet);
	}
	else

There may be other locations too