Include "clientversion.h" in rpc/masternode.cpp (#1979)
Include "clientversion.h" in rpc/masternode.cpp (#1979)

Otherwise it fails to compile when the wallet is disabled at compile time
dashpay/dash,nmarley/dash,crowning-/dash,ionomy/ion,nmarley/dash,biblepay/biblepay,biblepay/biblepay,ionomy/ion,thelazier/dash,ivansib/sibcoin,nmarley/dash,crowning-/dash,biblepay/biblepay,ivansib/sibcoin,UdjinM6/dash,crowning-/dash,biblepay/biblepay,thelazier/dash,crowning-/dash,dashpay/dash,biblepay/biblepay,dashpay/dash,biblepay/biblepay,ionomy/ion,ionomy/ion,UdjinM6/dash,UdjinM6/dash,ivansib/sibcoin,dashpay/dash,crowning-/dash,biblepay/biblepay,ivansib/sibcoin,thelazier/dash,thelazier/dash,ivansib/sibcoin,UdjinM6/dash,nmarley/dash,nmarley/dash,crowning-/dash,ivansib/sibcoin,biblepay/biblepay,thelazier/dash,dashpay/dash,UdjinM6/dash,ionomy/ion,ionomy/ion,nmarley/dash,nmarley/dash