function registerPropertyAssignment( node ) {
		if (
			node.value.type === 'Identifier' &&
			hasOwnProp( functionHash, node.value.name )
		) {
			functionHash[ node.value.name ].private = false;
		}
	}
Registers that a known function has been assigned as a property.

@private
@param {ASTNode} node - node to report