[O] [html] nil getting inserted

[Samuel Wales]

I am getting this diff in HTML output in recent git master.  I don't
think I changed anything and I have no filters for links.  I haven't
tried it in emacs -Q though.

Note the nil before the >.

===
-severe to any person who is not <a
href="http://thekafkapandemic.blogspot.com/2012/04/misopathy.html";>misopathic</a>,
but they are
+severe to any person who is not <a
href="http://thekafkapandemic.blogspot.com/2012/04/misopathy.html"nil>misopathic</a>,
but they are
===

Thanks.

Samuel

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