[MacPorts] #36633: cppcheck: upgrade 1.56

[MacPorts]

#36633: cppcheck: upgrade 1.56
------------------------------+----------------------------
  Reporter:  robsonpeixoto@…  |      Owner:  paj-macports@…
      Type:  update           |     Status:  closed
  Priority:  Normal           |  Milestone:
 Component:  ports            |    Version:  2.1.2
Resolution:  fixed            |   Keywords:  haspatch
      Port:  cppcheck         |
------------------------------+----------------------------
Changes (by ryandesign@…):

 * status:  new => closed
 * resolution:   => fixed


Comment:

 r98922 (maintainer timeout)

 I added `HAVE_RULES=yes` to enable the "rules" feature, which is what uses
 the pcre library. At some point this feature evidently became optional and
 off by default.

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Ticket URL: <https://trac.macports.org/ticket/36633#comment:2>
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