[MacPorts] #72530: mpstats broken on El Capitan, It's OK on Sequoia

[MacPorts]

#72530: mpstats broken on El Capitan, It's OK on Sequoia
------------------------+------------------------
  Reporter:  snowflake  |      Owner:  neverpanic
      Type:  defect     |     Status:  assigned
  Priority:  Normal     |  Milestone:
 Component:  ports      |    Version:  2.10.99
Resolution:             |   Keywords:
      Port:  mpstats    |
------------------------+------------------------

Comment (by snowflake):

 On El Capitan:

 ```/opt/local/libexec/mpstats show```  fails with the error as above

 ```port-tclsh /opt/local/libexec/mpstats show```  works and displays the
 stats.

 ```/opt/local/bin/port-tclsh``` is identical on both machines and reads:
 {{{
 #!/bin/sh
 exec "/opt/local/libexec/macports/bin/tclsh8.6" "$@"
 }}}

 ```/bin/sh --version``` is the same on both machines and it reads:
 {{{
 GNU bash, version 3.2.57(1)-release (x86_64-apple-darwin24)
 Copyright (C) 2007 Free Software Foundation, Inc.
 }}}

 Apple have not touched this in years although they have obviously used
 different compilers
 to build it. I think we are looking at a system shell bug.

-- 
Ticket URL: <https://trac.macports.org/ticket/72530#comment:7>
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