Fix undefined log function in Transaction.finalize()
Fix undefined log function in Transaction.finalize()

wilsonianb/ripple-lib,ripple/ripple-lib,darkdarkdragon/ripple-lib,darkdarkdragon/ripple-lib,ripple/ripple-lib,ripple/ripple-lib,ripple/ripple-lib,wilsonianb/ripple-lib,wilsonianb/ripple-lib,darkdarkdragon/ripple-lib