Fix the build after r175772

Patch by Benjamin Poulain <bpoulain@apple.com> on 2014-11-07

* inspector/InspectorCSSAgent.cpp:
(WebCore::InspectorCSSAgent::buildArrayForMatchedRuleList):


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@175773 268f45cc-cd09-0410-ab3c-d52691b4dbfc