Fix crash with -banversion (#432)
Fix crash with -banversion (#432)

Fixes the range of the for loop which was causing a client crash when using the -banversion argument.
navcoindev/navcoin-core,navcoindev/navcoin-core,navcoindev/navcoin-core,navcoindev/navcoin-core,navcoindev/navcoin-core,navcoindev/navcoin-core