[RTEMS Project] #3392: infinite loop in RSB's path when a prefix path is not writable

[RTEMS trac]

#3392: infinite loop in RSB's path when a prefix path is not writable
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  Reporter:  Chris Johns  |      Owner:  (none)
      Type:  defect       |     Status:  new
  Priority:  normal       |  Milestone:  5.1
 Component:  admin        |    Version:  5
  Severity:  normal       |   Keywords:
Blocked By:               |   Blocking:
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 The code gets the `dirname()` of the path stepping up until there is no
 path however `dirname('/')` is `/` so the path never has a length of `0`.

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Ticket URL: <http://devel.rtems.org/ticket/3392>
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