bug#22473: perl mode says No matching parenthesis found wrongly

[積丹尼 Dan Jacobson]

$ cat p.pl && emacs p.pl

$tree->{kml}->{Document}->{description} =
q{由 <a href="mailto:millerliu@gmail.com";>Miller Liu</a> 逐筆修正 <a 
href="http://www.ncc.gov.tw/";>NCC</a> 電台坐標數據， $latest 止， 再由<a 
href="http://jidanni.org/";>積丹尼</a>存放於<a 
href="http://radioscanningtw.wikia.com/wiki/台描:地圖";>台描</a>。 "x"=停播。};

Now remove the final } . Now put it back.
See the "No matching parenthesis found"? BUG!
(Also bad that C-h e doesn't have that warning listed.)
Well other parts of emacs know about that }, because beyond it the color
is restored.