[MacPorts] #65435: coreutils @9.x: fix implicit declaration warnings

[MacPorts]

#65435: coreutils @9.x: fix implicit declaration warnings
----------------------------------------+------------------------------
  Reporter:  mascguy                    |      Owner:  mascguy
      Type:  defect                     |     Status:  assigned
  Priority:  Normal                     |  Milestone:
 Component:  ports                      |    Version:  2.7.2
Resolution:                             |   Keywords:  implicit pending
      Port:  coreutils coreutils-devel  |
----------------------------------------+------------------------------

Comment (by ryandesign):

 In [changeset:"00461b59e05039c16a0cda04485ae34045607f32/macports-ports"
 00461b59e05039c16a0cda04485ae34045607f32/macports-ports] (master):
 {{{
 #!ConfigurableCommitTicketReference repository="macports-ports"
 revision="00461b59e05039c16a0cda04485ae34045607f32"
 coreutils*: Suppress strchr warning

 See: https://trac.macports.org/ticket/65435
 }}}

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Ticket URL: <https://trac.macports.org/ticket/65435#comment:7>
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