This commit removes unnecessary parentheses in 'if' statements to resolve the build failures by the XCODE5 tool chain. Cc: Eric Dong <eric.dong@intel.com> Cc: Dandan Bi <dandan.bi@intel.com> Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Hao Wu <hao.a.wu@intel.com> Reviewed-by: Star Zeng <star.zeng@intel.com> Reviewed-by: Liming Gao <liming.gao@intel.com>