Fix a possible overflow and crash in the ARP analyzer
	when receiving a specially crafted packet. Due to the
	possibility of this happening with packets received from
	the network, this is a potential DoS vulnerability. 
	 Fix a possible overflow and crash in the Modbus analyzer
	when receiving a specially crafted packet. Due to the
	possibility of this happening with packets received from
	the network, this is a potential DoS vulnerability. 
	 Fix two possible crashes when converting IP headers for
	output via the raw_packet event. Due to the possibility of
	this happening with packets received from the network, this
	is a potential DoS vulnerability. Note that the raw_packet
	event is not enabled by default so these are likely
	low-severity issues. 
	 Fix an abort related to an error related to the ordering
	of record fields when processing DNS EDNS headers via events.
	Due to the possibility of this happening with packets
	received from the network, this is a potential DoS
	vulnerability.  Note that the dns_EDNS events are not
	implemented by default so this is likely a low-severity
	issue.