chewmail damages header lines

[Hadmut Danisch]

Hi,

I just ran some mailboxes through chewmail and found, that it changes headerlines in a wrong way.

E.g. the original mail in mbox format started with

From <email address hidden> Sun Dec 20 16:16:55 2015
>From <email address hidden> Sun Dec 20 16:16:55 2015
Return-Path: <email address hidden>
...

which was turned into

From <email address hidden> Sun Dec 20 16:16:55 2015
>From <email address hidden> Sun Dec 20 16: 16:55 2015
Return-Path: <email address hidden>

by chewmail. Note the difference in the date of the second line, which got a space character after the hour

diff
2c2
< >From <email address hidden> Sun Dec 20 16:16:55 2015
---
> >From <email address hidden> Sun Dec 20 16: 16:55 2015

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: chewmail 1.3-1
ProcVersionSignature: Ubuntu 4.4.0-22.40-generic 4.4.8
Uname: Linux 4.4.0-22-generic x86_64
ApportVersion: 2.20.1-0ubuntu2
Architecture: amd64
CurrentDesktop: LXDE
Date: Thu May 26 21:46:27 2016
PackageArchitecture: all
SourcePackage: chewmail
UpgradeStatus: Upgraded to xenial on 2016-04-06 (50 days ago)