d3bb711 BaseTools: Eliminate two shift-negative-value in FvLib.c

1 file Authored by Zenith432 8 years ago, Committed by Liming Gao 8 years ago,
    BaseTools: Eliminate two shift-negative-value in FvLib.c
    
    clang 3.8 flags -Wshift-negative-value warning, which turns fatal due to
    use of -Werror.
    
    Fixes: https://github.com/tianocore/edk2/issues/49
    
    Contributed-under: TianoCore Contribution Agreement 1.0
    Signed-off-by: Zenith432 <zenith432@users.sourceforge.net>
    Reviewed-by: Liming Gao <liming.gao@intel.com>