codeintel: oop: Prevent RequestFailure from supplying positional arguments

This fixes cases where codeintel will stop working; most easily reproduced
by doing a code browser locate scope in <a>|</a><?php?> (where the cursor
is in markup and not script).

rn=

(integrated from komodo (trunk) change 82338 by marky)

git-svn-id: http://svn.openkomodo.com/repos/openkomodo/trunk@13774 b87d16e7-d29f-4ee1-b5ec-817d645d335f