pbft: fix conditional
pbft: fix conditional

Found-by: da39a3ee5e6b4b0d3255bfef95601890afd80709@kchristidis
Signed-off-by: Simon Schubert <51a3d642c59e957126c8c9975e756dadd0226d4c@zurich.ibm.com>

ghaskins/obc-peer,murali-katipalli-dtcc/fabric,gromeroar/fabric,tuand27613/obc-peer,jjjjibm/fabric,tuand27613/obc-peer,hyperledger-archives/fabric,bburgdave/fabric,gongsu832/obc-peer,gennadylaventman/fabric,popldo/fabric,gongsu832/obc-peer,hyperledger-archives/fabric,srderson/fabric,gennadylaventman/fabric,gongsu832/fabric,JonathanLevi/fabric,sumanair/obc-peer,murali-katipalli-dtcc/fabric,ghaskins/obc-peer,hyperledger-archives/fabric,JonathanLevi/fabric,murali-katipalli-dtcc/fabric,gennadylaventman/fabric,isghe/obc-peer,jjjjibm/fabric,itp4IBM/fabric,gennadylaventman/fabric,binhn/obc-peer,hyperledger-archives/fabric,jjjjibm/fabric,angrbrd/fabric,rameshthoomu/obc-peer,tuand27613/fabric,gongsu832/fabric,gennadylaventman/fabric,bren3582/fabric,adecaro/fabric,andresgaragiola/fabric,andresgaragiola/fabric,binhn/obc-peer,ariccy/fabric,popldo/fabric,openblockchain/obc-peer,srderson/fabric,adecaro/fabric,gromeroar/fabric,ghaskins/obc-peer,ariccy/fabric,JonathanLevi/fabric,angrbrd/fabric,tuand27613/fabric,isghe/obc-peer,bburgdave/fabric,itp4IBM/fabric,andresgaragiola/fabric,angrbrd/fabric,tenc/obc-peer-pre-public,popldo/fabric,gromeroar/fabric,jjjjibm/fabric,rameshthoomu/obc-peer,bburgdave/fabric,ghaskins/obc-peer,gongsu832/fabric,popldo/fabric,bren3582/fabric,hyperledger-archives/fabric,hyperledger-archives/fabric,srderson/fabric,itp4IBM/fabric,srderson/fabric,popldo/fabric,gromeroar/fabric,jjjjibm/fabric,JonathanLevi/fabric,isghe/obc-peer,gromeroar/fabric,bren3582/fabric,angrbrd/fabric,ahuachen/fabric,itp4IBM/fabric,tuand27613/fabric,andresgaragiola/fabric,andresgaragiola/fabric,bburgdave/fabric,itp4IBM/fabric,tenc/obc-peer-pre-public,tenc/obc-peer-pre-public,gromeroar/fabric,bren3582/fabric,tuand27613/obc-peer,JonathanLevi/fabric,murali-katipalli-dtcc/fabric,angrbrd/fabric,openblockchain/obc-peer,ariccy/fabric,tuand27613/fabric,noamher/obc-peer,jjjjibm/fabric,ariccy/fabric,gennadylaventman/fabric,adecaro/fabric,tuand27613/fabric,JonathanLevi/fabric,andresgaragiola/fabric,bren3582/fabric,andresgaragiola/fabric,isghe/obc-peer,bren3582/fabric,jjjjibm/fabric,tuand27613/fabric,srderson/fabric,murali-katipalli-dtcc/fabric,bburgdave/fabric,ahuachen/fabric,ariccy/fabric,binhn/obc-peer,angrbrd/fabric,popldo/fabric,murali-katipalli-dtcc/fabric,itp4IBM/fabric,noamher/obc-peer,sumanair/obc-peer,adecaro/fabric,sumanair/obc-peer,popldo/fabric,srderson/fabric,ariccy/fabric,JonathanLevi/fabric,ahuachen/fabric,ahuachen/fabric,openblockchain/obc-peer,murali-katipalli-dtcc/fabric,tenc/obc-peer-pre-public,ahuachen/fabric,noamher/obc-peer,bren3582/fabric,ariccy/fabric,srderson/fabric,isghe/obc-peer,adecaro/fabric,itp4IBM/fabric,gongsu832/obc-peer,angrbrd/fabric,hyperledger-archives/fabric,ahuachen/fabric,adecaro/fabric,rameshthoomu/obc-peer,adecaro/fabric,tuand27613/fabric,ahuachen/fabric,gongsu832/fabric,gennadylaventman/fabric,gromeroar/fabric