Unreviewed, roll out http://trac.webkit.org/changeset/144989
        
I think we want the assertion that I removed.

* dfg/DFGAbstractState.cpp:
(JSC::DFG::AbstractState::merge):
(JSC::DFG::AbstractState::mergeVariableBetweenBlocks):
* dfg/DFGAbstractState.h:
(AbstractState):



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@144991 268f45cc-cd09-0410-ab3c-d52691b4dbfc