[MacPorts] #61663: procmail @3.22: error: implicit declaration of function 'killchildren' is invalid in C99

[MacPorts]

#61663: procmail @3.22: error: implicit declaration of function 'killchildren' is
invalid in C99
-----------------------+-----------------------------
  Reporter:  pwosel    |      Owner:  blair
      Type:  defect    |     Status:  closed
  Priority:  Normal    |  Milestone:
 Component:  ports     |    Version:  2.6.4
Resolution:  fixed     |   Keywords:  bigsur catalina
      Port:  procmail  |
-----------------------+-----------------------------

Comment (by jmroot):

 Crashing is the best case scenario actually. Another possibility is subtle
 incorrect behaviour due to stack corruption. You might get away with it
 iff either no functions that take varargs are used, or those that do are
 always called only with their fixed arguments.

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Ticket URL: <https://trac.macports.org/ticket/61663#comment:8>
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