Effect of neglect of promisee to afford promisor reasonable facilities for performance.

If any promisee neglects or refuses to afford the promisor reasonable facilities for the performance of his promise, the promisor is excused by such neglect or refusal as to any non-performance caused thereby. Illustration A contracts with B to repair B's house. B neglects or refuses to point out to A the places in which his house requires repair. A is excused for the non-performance of the contract if it is caused by such neglect or refusal.