[MacPorts] #70675: gh: Error: Failed to destroot gh: dyld: Symbol not found: _exit

[MacPorts]

#70675: gh:  Error: Failed to destroot gh: dyld: Symbol not found: _exit
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 Reporter:  RobK88  |      Owner:  (none)
     Type:  defect  |     Status:  new
 Priority:  Normal  |  Milestone:
Component:  ports   |    Version:  2.10.1
 Keywords:          |       Port:  gh legacy-support
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 The port `gh` fails to destroot on El Capitan and Mtn Lion:

 `Error: Failed to destroot gh: dyld: Symbol not found: _exit`

 It looks like `legacy-support` does not handle the `_exit` symbol.

 I do hope someone can add this symbol to `legacy-support`.  It should be
 easy considering the nature of the symbol.

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Ticket URL: <https://trac.macports.org/ticket/70675>
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