fix crash: CoinControl "space" bug
fix crash: CoinControl "space" bug

Just like https://github.com/novacoin-project/novacoin/commit/baf80c26a2e7f1ba6061d63d174eff0a09111e6f
wastholm/bitcoin,wastholm/bitcoin,wastholm/bitcoin,wastholm/bitcoin,wastholm/bitcoin,wastholm/bitcoin