New test for another error case in DepositScriptAddress

Line 411 in pool.go is not a return statement:


https://github.com/gsalgado/btcwallet/blob/1367de3ff5b7b2b6de128ab6e10bc7edd375f46a/waddrmgr/pool.go#L411

What I meant about testName is that it's useful when you have
table-driven tests, but redundant otherwise.