function ForOfStatement( node, state, clbk ) {
	if ( node.await === true ) {
		state.hasAwait = true;
	}
	walk.base.ForOfStatement( node, state, clbk ); // eslint-disable-line new-cap
}
Callback invoked upon encountering a `ForOfStatement` AST node.

@private
@param {Node} node - AST node
@param {Object} state - state
@param {Function} clbk - callback