[GHC] #8886: sync-all: END actions result in confusing error message

[GHC]

#8886: sync-all: END actions result in confusing error message
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        Reporter:  fw          |            Owner:  hvr
            Type:  bug         |           Status:  patch
        Priority:  normal      |        Milestone:
       Component:  Trac & Git  |          Version:
      Resolution:              |         Keywords:  sync-all
Operating System:              |     Architecture:  Unknown/Multiple
  Unknown/Multiple             |       Difficulty:  Easy (less than 1 hour)
 Type of failure:              |       Blocked By:
  None/Unknown                 |  Related Tickets:
       Test Case:              |
        Blocking:              |
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Changes (by thomie):

 * status:  new => patch


Comment:

 The false warning is also triggered when running a different `sync-all`
 command  before the first succesful `sync-all get`, for example if one
 runs (for whatever reason):

     git clone git://github.com/ghc/ghc
     cd ghc
     ./sync-all -r http://git.haskell.org remote set-url origin

 The attached patch proposes a solution.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8886#comment:5>
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