[MacPorts] #54004: icu @58.2: fix CVE-2017-7867 and CVE-2017-7868

[MacPorts]

#54004: icu @58.2: fix CVE-2017-7867 and CVE-2017-7868
--------------------+------------------------
 Reporter:  l2dy    |      Owner:  ryandesign
     Type:  defect  |     Status:  new
 Priority:  Normal  |  Milestone:
Component:  ports   |    Version:
 Keywords:          |       Port:  icu
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 See https://ssl.icu-project.org/trac/changeset/39671. Fixed in icu 59.1.

 https://nvd.nist.gov/vuln/detail/CVE-2017-7867
 https://nvd.nist.gov/vuln/detail/CVE-2017-7868

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Ticket URL: <https://trac.macports.org/ticket/54004>
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