sync_back only calls Index.sync_message if the locations change.

Excerpts from Gaute Hope's message of 2014-04-25 11:00:40 -0500:
> > @@ -224,6 +224,8 @@ def poll_from source, opts={}
> >                m = source.ensure_in_archive m
> >              end
> >  
> > +            m.sync_back 
> > +
> >              Index.sync_message m, true, false
> 
> This one is, I think, redundant when sync_back is done. You want the config and source checks for sync_back which are done in m.sync_back. But sync_back only calls Index.sync_message (I think). The third argument to sync_message specifies whether to sync_back maildir-root stuff to the file.
> 
> ---
> Reply to this email directly or view it on GitHub:
> https://github.com/sup-heliotrope/sup/pull/297/files#r12002996