Get rid of most unused arguments and variables (including some that are

set but not used).  (Leave "pi" around so the warning acts as a reminder
that the tap structure stuff needs a cleanup - currently, the tap
structures aren't freed; perhaps the new memory allocation scheme
proposed by Ronnie could be used for tap structures.)

Have "ac_istrace()" return NOT_ACTRACE for apparently non-actrace
packets and return the packet type for actrace packets, so that we don't
need a global variable for the packet type.

Make "actrace_udp_port" unsigned to squelch a signed vs. unsigned
warning.

Use "col_set_str()" rather than "col_add_str()" when setting the
Protocol column.

We don't recognized packets as CAS packets unless they're 48 bytes long,
so we don't need to test whether they're 48 bytes long in the CAS packet
dissection code.

Use the reported length, not the captured length, when doing length
checks.


git-svn-id: http://anonsvn.wireshark.org/wireshark/trunk@14874 f5534014-38df-0310-8fa8-9805f1628bb7

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