Bug 828446 - [email/IMAP] timezone offset calculation breaks if timezone offset < -7 or > 7. will result in duplicate messages. r=squib, a=blocking-basecamp
Merge pull request #7467 from asutherland/email-fix-tzoffset

Bug 828446 - [email/IMAP] timezone offset calculation breaks if timezone offset < -7 or > 7. will result in duplicate messages. r=squib, a=blocking-basecamp
Auto-merge from branch 'master'