fix test case on 32bit platforms
fix test case on 32bit platforms

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