Reviewed by Oliver.

        Add KJS_CHECKEXCEPTIONBOOLEAN to match rest of nodes.cpp

        * kjs/nodes.cpp:
        (KJS::ExpressionNode::evaluateToBoolean):
        (KJS::LessNode::evaluateToBoolean):
        (KJS::GreaterNode::evaluateToBoolean):
        (KJS::LessEqNode::evaluateToBoolean):
        (KJS::GreaterEqNode::evaluateToBoolean):
        (KJS::InstanceOfNode::evaluateToBoolean):
        (KJS::InNode::evaluateToBoolean):
        (KJS::EqualNode::evaluateToBoolean):
        (KJS::NotEqualNode::evaluateToBoolean):
        (KJS::StrictEqualNode::evaluateToBoolean):
        (KJS::NotStrictEqualNode::evaluateToBoolean):
        (KJS::LogicalAndNode::evaluateToBoolean):
        (KJS::LogicalOrNode::evaluateToBoolean):
        (KJS::ConditionalNode::evaluateToBoolean):


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@27684 268f45cc-cd09-0410-ab3c-d52691b4dbfc