[MacPorts] #50899: libpng 1.6.21 fails to install: failure while applying patches

[MacPorts]

#50899: libpng 1.6.21 fails to install: failure while applying patches
-----------------------------+--------------------------------
 Reporter:  peter.waltman@…  |      Owner:  macports-tickets@…
     Type:  defect           |     Status:  new
 Priority:  Normal           |  Milestone:
Component:  ports            |    Version:  2.3.3
 Keywords:  libpng 1.6.21    |       Port:
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 while installing libpng under macports 2.3.3, I get an error about a patch
 failing while trying to install libpng. The error in the shell is below.
 I'm also attaching the log file that is referenced by the error message

 {{{
 $ sudo port install libpng
 --->  Computing dependencies for libpng
 --->  Applying patches to libpng
 Error: org.macports.patch for port libpng returned: command execution
 failed
 Please see the log file for port libpng for details:
 /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_release_ports_graphics_libpng/libpng/main.log
 To report a bug, follow the instructions in the guide:
     http://guide.macports.org/#project.tickets
 Error: Processing of port libpng failed
 mac137186:~ waltmape$ port version
 Version: 2.3.3

 }}}

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Ticket URL: <https://trac.macports.org/ticket/50899>
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