Fix unused variable build warning on Mac.
Fix unused variable build warning on Mac.

Change-Id: I330187be6a96bfd388c2776f676d47a9145d5e4a

chenkai036/flatbuffers,jasonstubbs/flatbuffers,SinbadFreedom/FlatBuffer,zarianw/flatbuffers,alexames/flatbuffers,zarianw/flatbuffers,rw/flatbuffers,SinbadFreedom/FlatBuffer,jasonstubbs/flatbuffers,evolutional/flatbuffers,google/flatbuffers,alexames/flatbuffers,zarianw/flatbuffers,chenkai036/flatbuffers,chenkai036/flatbuffers,rw/flatbuffers,stewartmiles/flatbuffers,FrankStain/flatbuffers,stewartmiles/flatbuffers,google/flatbuffers,stewartmiles/flatbuffers,google/flatbuffers,chenkai036/flatbuffers,royalharsh/flatbuffers,pjulien/flatbuffers,stewartmiles/flatbuffers,jekinchen/flatjni,royalharsh/flatbuffers,alexames/flatbuffers,pjulien/flatbuffers,FrankStain/flatbuffers,chenkai036/flatbuffers,jekinchen/flatjni,jekinchen/flatjni,rw/flatbuffers,pjulien/flatbuffers,rw/flatbuffers,alexames/flatbuffers,rw/flatbuffers,jekinchen/flatjni,evolutional/flatbuffers,hgl888/flatbuffers,royalharsh/flatbuffers,alexames/flatbuffers,MiCHiLU/flatbuffers,chenkai036/flatbuffers,evolutional/flatbuffers,pjulien/flatbuffers,google/flatbuffers,DavadDi/flatbuffers,zarianw/flatbuffers,alexames/flatbuffers,pjulien/flatbuffers,SinbadFreedom/FlatBuffer,endorph-soft/flatbuffers,stewartmiles/flatbuffers,rw/flatbuffers,zarianw/flatbuffers,rw/flatbuffers,jasonstubbs/flatbuffers,endorph-soft/flatbuffers,FrankStain/flatbuffers,DavadDi/flatbuffers,endorph-soft/flatbuffers,FrankStain/flatbuffers,chenkai036/flatbuffers,MiCHiLU/flatbuffers,DavadDi/flatbuffers,stewartmiles/flatbuffers,pjulien/flatbuffers,royalharsh/flatbuffers,jasonstubbs/flatbuffers,FrankStain/flatbuffers,endorph-soft/flatbuffers,evolutional/flatbuffers,jasonstubbs/flatbuffers,evolutional/flatbuffers,alexames/flatbuffers,royalharsh/flatbuffers,stewartmiles/flatbuffers,stewartmiles/flatbuffers,pjulien/flatbuffers,hgl888/flatbuffers,royalharsh/flatbuffers,google/flatbuffers,pjulien/flatbuffers,jekinchen/flatjni,jekinchen/flatjni,google/flatbuffers,SinbadFreedom/FlatBuffer,royalharsh/flatbuffers,endorph-soft/flatbuffers,evolutional/flatbuffers,royalharsh/flatbuffers,rw/flatbuffers,google/flatbuffers,FrankStain/flatbuffers,endorph-soft/flatbuffers,evolutional/flatbuffers,chenkai036/flatbuffers,SinbadFreedom/FlatBuffer,alexames/flatbuffers,hgl888/flatbuffers,stewartmiles/flatbuffers,jekinchen/flatjni,stewartmiles/flatbuffers,MiCHiLU/flatbuffers,alexames/flatbuffers,SinbadFreedom/FlatBuffer,alexames/flatbuffers,alexames/flatbuffers,DavadDi/flatbuffers,jekinchen/flatjni,rw/flatbuffers,evolutional/flatbuffers,evolutional/flatbuffers,pjulien/flatbuffers,rw/flatbuffers,pjulien/flatbuffers,jekinchen/flatjni,jasonstubbs/flatbuffers,zarianw/flatbuffers,google/flatbuffers,alexames/flatbuffers,zarianw/flatbuffers,SinbadFreedom/FlatBuffer,jekinchen/flatjni,endorph-soft/flatbuffers,google/flatbuffers,pjulien/flatbuffers,stewartmiles/flatbuffers,FrankStain/flatbuffers,evolutional/flatbuffers,chenkai036/flatbuffers,google/flatbuffers,SinbadFreedom/FlatBuffer,hgl888/flatbuffers,evolutional/flatbuffers,MiCHiLU/flatbuffers,chenkai036/flatbuffers,DavadDi/flatbuffers,FrankStain/flatbuffers,google/flatbuffers,zarianw/flatbuffers,evolutional/flatbuffers,jasonstubbs/flatbuffers,rw/flatbuffers,stewartmiles/flatbuffers,MiCHiLU/flatbuffers,google/flatbuffers,endorph-soft/flatbuffers,evolutional/flatbuffers,pjulien/flatbuffers,endorph-soft/flatbuffers,alexames/flatbuffers,endorph-soft/flatbuffers,google/flatbuffers,hgl888/flatbuffers,google/flatbuffers,alexames/flatbuffers,google/flatbuffers,royalharsh/flatbuffers,MiCHiLU/flatbuffers,MiCHiLU/flatbuffers,jasonstubbs/flatbuffers,stewartmiles/flatbuffers,DavadDi/flatbuffers,MiCHiLU/flatbuffers,rw/flatbuffers,royalharsh/flatbuffers,alexames/flatbuffers,hgl888/flatbuffers