Synch with Gnus trunk:
authorKatsumi Yamaoka <yamaoka@jpl.org>
Thu, 22 Apr 2010 08:25:46 +0000 (08:25 +0000)
committerKatsumi Yamaoka <yamaoka@jpl.org>
Thu, 22 Apr 2010 08:25:46 +0000 (08:25 +0000)
(message-generate-headers): Record insertion of optional headers as well.
Otherwise the check to prevent repeated insertion of optional headers
is a no-op.  By Andreas Seltenreich <seltenreich@gmx.de>.


Trivial merge