Fixed compilation in -O2 mode.

castor/db/ora/OraVdqmSvc.cpp

castor/tape/tapegateway/daemon/VmgrTapeGatewayHelper.cpp

castor/tape/tapeserver/SCSI/StructuresTest.cpp

common/Cregexp.c

common/Csecloader.c

h/Cns_constants.h

h/marshall.h

h/osdep.h

h/rtcp.h

hsmtools/stager_actualget.cpp

hsmtools/stager_actualput.cpp

ns/Cns_procreq.c

ns/nschclass.c

ns/nschmod.c

ns/nschown.c

ns/nsfind.c

ns/nsls.c

ns/nsmkdir.c

ns/nsrm.c

ns/send2nsd.c