An owner agreed to pay a commission for procuring a tenant for a building to be erected, payable upon the signing of the lease, and which contract for a lease, binding the tenant procured by plaintiff, was terminated by the destruction of the building before completion, and before any lease had been signed, and owner was not in default in not securing the signing of the lease, and hence not liable for commissions. Leventritt v. Cornell, 132 P. 627, 21 Cal. App. 597.