t6000: fix a careless test library add-on.
It tried to "restore" GIT_AUTHOR_EMAIL environment variable but the variable started out as unset, so ended up setting it to an empty string. This is now caught as an error. Signed-off-by: Junio C Hamano <junkio@cox.net>
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@ -51,7 +51,12 @@ as_author()
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export GIT_AUTHOR_EMAIL="$_author"
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"$@"
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if test -z "$_save"
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then
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unset GIT_AUTHOR_EMAIL
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else
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export GIT_AUTHOR_EMAIL="$_save"
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fi
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}
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commit_date()
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