Fix dse/dse_dump sporadic test failure if uninitialized 4th byte of record header turns out to be a graphic character (i.e. displayable by DSE DUMP)
Fix dse/dse_dump sporadic test failure if uninitialized 4th byte of record header turns out to be a graphic character (i.e. displayable by DSE DUMP)

nars1/YottaDBtest,nars1/YottaDBtest,nars1/YottaDBtest,nars1/YottaDBtest,nars1/YottaDBtest,nars1/YottaDBtest