Comment 260 for bug 52667

Created an attachment (id=377404)
A patch handling the case where I'm cc:-ed, and no-one is to:-ed.

As mentioned before, this depends on the patch from https://bugzilla.mozilla.org/show_bug.cgi?id=326809#c13 but it definitely fixes the bug I was seeing.

One thing I was unsure about was the correct indentation for the following two statements:
  let hdrParser = Components.classes[
    "@mozilla.org/messenger/headerparser;1"].getService(
    Components.interfaces.nsIMsgHeaderParser);
and:
  let buttonBox = document.getElementById(gCollapsedHeaderViewMode ?
    "collapsedButtonBox" : "expandedButtonBox");

Thanks,
Blake.