[PATCH] sync-all: Skip END actions on exceptions

[Florian Weimer]

The instructions at <https://ghc.haskell.org/trac/ghc/wiki/Newcomers>
were slightly outdated, and result in a rather confusing error
messsage:

$ ./sync-all --testsuite get
Unrecognised flag: --testsuite at ./sync-all line 872.
== Checking for old haddock repo
== Checking for old binary repo
== Checking for old mtl repo
== Checking for old Cabal repo
== Checking for old time from tarball
============================
ATTENTION!

You have an old time package in your GHC tree!

Please remove it (e.g. "rm -r libraries/time"), and then run
"./sync-all get" to get the new repository.
============================
== Checking for obsolete Git repo URL
$

The patch corrects the error message.  I've removed the --testsuite
flag from the wiki page as well.

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