Fix (CID 59459): initialise one more variable in constructor
Fix (CID 59459): initialise one more variable in constructor

trshaffer/cvmfs,cvmfs/cvmfs,cvmfs/cvmfs,cvmfs-testing/cvmfs,cvmfs-testing/cvmfs,DrDaveD/cvmfs,Gangbiao/cvmfs,cvmfs/cvmfs,alhowaidi/cvmfsNDN,Moliholy/cvmfs,cvmfs/cvmfs,djw8605/cvmfs,djw8605/cvmfs,djw8605/cvmfs,DrDaveD/cvmfs,cvmfs/cvmfs,Moliholy/cvmfs,alhowaidi/cvmfsNDN,Moliholy/cvmfs,MicBrain/cvmfs,DrDaveD/cvmfs,Gangbiao/cvmfs,MicBrain/cvmfs,Gangbiao/cvmfs,MicBrain/cvmfs,MicBrain/cvmfs,reneme/cvmfs,djw8605/cvmfs,reneme/cvmfs,trshaffer/cvmfs,Gangbiao/cvmfs,cvmfs-testing/cvmfs,trshaffer/cvmfs,alhowaidi/cvmfsNDN,MicBrain/cvmfs,reneme/cvmfs,trshaffer/cvmfs,alhowaidi/cvmfsNDN,Gangbiao/cvmfs,cvmfs/cvmfs,reneme/cvmfs,DrDaveD/cvmfs,DrDaveD/cvmfs,cvmfs-testing/cvmfs,alhowaidi/cvmfsNDN,Moliholy/cvmfs,DrDaveD/cvmfs,cvmfs/cvmfs,cvmfs-testing/cvmfs,reneme/cvmfs,djw8605/cvmfs,trshaffer/cvmfs,DrDaveD/cvmfs,Moliholy/cvmfs