[MacPorts] #67653: dc3dd: fix implicit declaration warnings

[MacPorts]

#67653: dc3dd: fix implicit declaration warnings
----------------------+----------------------
 Reporter:  mascguy   |      Owner:  mascguy
     Type:  defect    |     Status:  assigned
 Priority:  Normal    |  Milestone:
Component:  ports     |    Version:  2.8.1
 Keywords:  implicit  |       Port:  dc3dd
----------------------+----------------------
 Details:

 {{{
 --->  Configuring dc3dd
 Warning: Configuration logfiles contain indications of -Wimplicit-
 function-declaration; check that features were not accidentally disabled:
   re_search: found in dc3dd-7.3.1/config.log
   re_compile_pattern: found in dc3dd-7.3.1/config.log
   re_set_syntax: found in dc3dd-7.3.1/config.log
   towupper: found in dc3dd-7.3.1/config.log
   towlower: found in dc3dd-7.3.1/config.log
   re_match: found in dc3dd-7.3.1/config.log
 }}}

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Ticket URL: <https://trac.macports.org/ticket/67653>
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