Get rid of unused exception value.
Get rid of unused exception value.

nivertech/nfldb,bparafina/nfldb,bparafina/nfldb,verdimrc/nfldb,BurntSushi/nfldb,codeaudit/nfldb,nivertech/nfldb,BurntSushi/nfldb,codeaudit/nfldb,verdimrc/nfldb