Fix bug in create transaction with cash account.
Fix bug in create transaction with cash account.

tonicospinelli/firefly-iii,JC5/firefly-iii,JC5/firefly-iii,tonicospinelli/firefly-iii,firefly-iii/firefly-iii,firefly-iii/firefly-iii,tonicospinelli/firefly-iii,firefly-iii/firefly-iii,tonicospinelli/firefly-iii,firefly-iii/firefly-iii