a regression where some nodes wouldn't be added to the tree.

Reviewed by Kevin McCullough.

* profiler/ProfileNode.cpp:
(KJS::ProfileNode::addChild): Compare callIdentifier instead
of functionName.
* profiler/ProfileNode.h:
(CallIdentifier.operator==): Compare the CallIdentifiers in
an order that fails sooner for non-matches.
(CallIdentifier.callIdentifier): Return the CallIdentifier by
reference to prevent making a new copy each time.


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@33952 268f45cc-cd09-0410-ab3c-d52691b4dbfc