[mhc:02291] import with attachements and wanderlust

[David Bremner <bremner@xxxxxx>]

[ Thanks to Nomura-san for committing my last suggestion.]

Does anyone have success with wanderlust (I use wl 2.15.6) and import
with attachments (C-U C-C . |). 

For me, the message in 

    http://www.cs.unb.ca/~bremner/18209.eml

fails with following partial backtrace

Debugger entered--Lisp error: (wrong-type-argument arrayp nil)
  wl-summary-set-message-buffer-or-redisplay()
  wl-summary-get-original-buffer()
  mhc-wl-mime-get-raw-buffer()
  funcall(mhc-wl-mime-get-raw-buffer)
  mhc-mime-get-raw-buffer()
  (progn (mhc-mime-get-raw-buffer))
  (if (or get-original (not structure)) (progn (mhc-mime-get-raw-buffer)))
  (when (or get-original (not structure)) (mhc-mime-get-raw-buffer))
  (let* ((structure ...) (raw-buffer ...) mime-view-ignored-field-list) (with-current-buffer (get-buffer-create mhc-mime-import-buffer) (if structure ... ...) (let ... ...) (if get-original ... ...)))
  mhc-mime-get-import-buffer((4))
  mhc-import((4))