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

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

IngCr3at1on/paycoin,mitchellcash/paycoin,thommyV91/Suck-a-Coin,thommyV91/Suck-a-Coin,PaycoinFoundation/paycoin,IngCr3at1on/paycoin,PaycoinFoundation/paycoin,thommyV91/Suck-a-Coin,IngCr3at1on/paycoin,Iamhumanareyou/EmprendeCoin,LambocoinFoundation/Lambocoin,TheNameIsNigel/paycoin,TheNameIsNigel/paycoin,mitchellcash/paycoin,ligerzero459/paycoin,LambocoinFoundation/Lambocoin,LambocoinFoundation/Lambocoin,PaycoinFoundation/paycoin,mitchellcash/paycoin,ligerzero459/paycoin,PaycoinFoundation/paycoin,Iamhumanareyou/EmprendeCoin,IngCr3at1on/paycoin,ligerzero459/paycoin,ligerzero459/paycoin,TheNameIsNigel/paycoin,thommyV91/Suck-a-Coin,Iamhumanareyou/EmprendeCoin,Iamhumanareyou/EmprendeCoin,TheNameIsNigel/paycoin,mitchellcash/paycoin,LambocoinFoundation/Lambocoin