[MacPorts] #54948: optipng 0.7.6 fails to build on MacOS 10.13

[MacPorts]

#54948: optipng 0.7.6 fails to build on MacOS 10.13
------------------------------+---------------------
 Reporter:  fracai            |      Owner:
     Type:  defect            |     Status:  new
 Priority:  Normal            |  Milestone:
Component:  ports             |    Version:
 Keywords:  10.13 highsierra  |       Port:  optipng
------------------------------+---------------------
 {{{
 osys.c:515:25: error: no member named 'st_atim' in 'struct stat'
         times[0] = sbuf.st_atim;
                    ~~~~ ^
 osys.c:516:25: error: no member named 'st_mtim' in 'struct stat'
         times[1] = sbuf.st_mtim;
                    ~~~~ ^
 2 errors generated.
 make[1]: *** [osys.o] Error 1
 }}}

 Looks like a similar issue occurred previously:
 https://sourceforge.net/p/optipng/bugs/47/

--
Ticket URL: <https://trac.macports.org/ticket/54948>
MacPorts <https://www.macports.org/>
Ports system for macOS