[cppcheck] fix postifx increment warning

common/utils/utils.cpp

objectstore/GarbageCollector.cpp

tapeserver/castor/tape/tapeserver/SCSI/Device.cpp

tapeserver/castor/tape/tapeserver/SCSI/DumpTest.cpp

tapeserver/castor/tape/tapeserver/daemon/CleanerSession.cpp

...rver/castor/tape/tapeserver/daemon/DiskReadThreadPool.cpp

...ver/castor/tape/tapeserver/daemon/DiskWriteThreadPool.cpp

...r/castor/tape/tapeserver/daemon/TapeWriteSingleThread.cpp

tapeserver/castor/tape/tapeserver/drive/DriveGeneric.cpp

...r/castor/tape/tapeserver/drive/TapeDriveReadWriteTest.cpp

...server/castor/tape/tapeserver/file/BasicReadWriteTest.cpp

tapeserver/castor/tape/tapeserver/system/Wrapper.cpp

tapeserver/readtp/TapeFseqRangeListSequence.cpp

tapeserver/readtp/TapeFseqSequenceParser.cpp