Fixed non-sensical error message
Fixed non-sensical error message

Previously trying to create a multisig address that required less than
one signature would output something like the following:

"wrong number of keys(got 1, need at least 0)"

MidasPaymentLTD/midascoin,MidasPaymentLTD/midascoin,MidasPaymentLTD/midascoin,MidasPaymentLTD/midascoin,MidasPaymentLTD/midascoin