strconv.Unquote could wrongly return a nil error on error.
strconv.Unquote could wrongly return a nil error on error.

R=rsc, gri
CC=golang-dev
http://codereview.appspot.com/773041

Committer: Robert Griesemer <a6752097faebf1f02d80107d77a9be009089afe3@golang.org>

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