…fit from the pagination by subtracting locked coins instead of selecting the desired entries out of the k.SpendableCoins results. That k.SpendableCoins method first gets all balances, then subtracts the locked coins. So this query was effectively getting all balances every time instead of only info on the current page's entries.

…e denom is negative; now it'll treat just that one as zero instead of the entire spendable balance. Also update SpendableCoin to not panic when there's more locked than available; just return a zero coin in that case.

…uld fail without this change).

…ar to when not looking.

…gas cost went down with this change.