Fixed recent regression (corruption of binary parts)

I just fixed a bug that I should at least mention to the list. On the notmuch master branch, since May 23, there has been a bug which could lead to corruption when saving binary attachments from messages. A recent change to share more code internally (to provide "notmuch show --part" rather than

Fixed recent regression (corruption of binary parts)

I just fixed a bug that I should at least mention to the list. On the notmuch master branch, since May 23, there has been a bug which could lead to corruption when saving binary attachments from messages. A recent change to share more code internally (to provide notmuch show --part rather than a