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Fix CLI return code on --help for ethkey, ethstore & whisper #8863
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Docopt handles
--help
automatically for us, however we've handled thoseErrors the same as all others: by exiting with Return Code
1
, which is wrongfor a totally appropriate a quit on
--help
. Fortunatelydocopt:Error
provides an
exit
helper function that discriminates properly between fataland non-fatal errors and exist appropriately.
This patch makes sure we use that handy function in case we encounter such an
error in the CLI of ethkey, ethstore and whisper. Thus those are now giving
the appropriate Return code on
--help
.fixes #8851