add ITP, target unstable

debian/changelog

@@ -1,5 +1,5 @@
 http-parser (2.1-1) unstable; urgency=low
 
-  * Initial release (Closes: #nnnn)  <nnnn is the bug number of your ITP>
+  * Initial release (Closes: #712052)
 
  -- Praveen Arimbrathodiyil <praveen@debian.org>  Thu, 13 Jun 2013 20:37:49 +0530