bug#5729: 23.1.94; WoMan regression: Invalid search bound (wrong side of point)

[Chong Yidong]

>> Running WoMan on the attached rsync manpage fails:
>>
>> ,----
>> | Debugger entered--Lisp error: (error "Invalid search bound (wrong side of 
>> point)")
>> |   re-search-forward("\\(^\\s *$\\)\\|\\(^\\s +\\)" #<marker (moves after 
>> insertion) at 13657 in *WoMan 1 rsync*> 1)
>> |   woman2-format-paragraphs(#<marker (moves after insertion) at 13657 in 
>> *WoMan 1 rsync*> 5)
>> |   woman2-PP(#<marker (moves after insertion) at 13657 in *WoMan 1 rsync*>)
>> |   woman2-roff-buffer()
>> |   woman-decode-region(1 159742)
>> |   woman-decode-buffer()
>> |   woman-process-buffer()
>> |   woman-really-find-file("/usr/share/man/man1/rsync.1.gz" t "*WoMan 1 
>> rsync*")
>> |   woman-find-file("/usr/share/man/man1/rsync.1.gz")
>> |   woman(nil nil)
>> |   call-interactively(woman nil nil)
>> `----
>>
>> This is a regression from Emacs 23.1 which displays the manpage just
>> fine.
>
> I bisected the problem, and the first bad commit is revision 96401:

I've checked in a fix.  Thanks.