Clean up some casts.
Clean up some casts.

Change-Id: I264ca534cd7d4755906e20aea47e7a2523bca611

GrokImageCompression/aom,smarter/aom,shyamalschandra/libvpx,running770/libvpx,thdav/aom,VTCSecureLLC/libvpx,openpeer/libvpx_new,jmvalin/aom,felipebetancur/libvpx,thdav/aom,GrokImageCompression/aom,liqianggao/libvpx,mwgoldsmith/vpx,shacklettbp/aom,mwgoldsmith/libvpx,openpeer/libvpx_new,GrokImageCompression/aom,VTCSecureLLC/libvpx,ShiftMediaProject/libvpx,webmproject/libvpx,ittiamvpx/libvpx-1,Topopiccione/libvpx,Topopiccione/libvpx,zofuthan/libvpx,GrokImageCompression/aom,smarter/aom,shyamalschandra/libvpx,running770/libvpx,shyamalschandra/libvpx,mbebenita/aom,liqianggao/libvpx,ittiamvpx/libvpx-1,luctrudeau/aom,jmvalin/aom,mwgoldsmith/vpx,webmproject/libvpx,zofuthan/libvpx,thdav/aom,zofuthan/libvpx,shacklettbp/aom,liqianggao/libvpx,mwgoldsmith/libvpx,mbebenita/aom,shacklettbp/aom,smarter/aom,webmproject/libvpx,luctrudeau/aom,ittiamvpx/libvpx-1,mwgoldsmith/libvpx,Topopiccione/libvpx,Topopiccione/libvpx,jmvalin/aom,jmvalin/aom,shyamalschandra/libvpx,mbebenita/aom,ittiamvpx/libvpx-1,mbebenita/aom,webmproject/libvpx,mbebenita/aom,ittiamvpx/libvpx-1,mbebenita/aom,mwgoldsmith/libvpx,openpeer/libvpx_new,shyamalschandra/libvpx,jmvalin/aom,mwgoldsmith/vpx,shacklettbp/aom,mbebenita/aom,openpeer/libvpx_new,mbebenita/aom,smarter/aom,ittiamvpx/libvpx-1,thdav/aom,jmvalin/aom,running770/libvpx,zofuthan/libvpx,running770/libvpx,openpeer/libvpx_new,mbebenita/aom,mwgoldsmith/vpx,running770/libvpx,zofuthan/libvpx,VTCSecureLLC/libvpx,Topopiccione/libvpx,webmproject/libvpx,felipebetancur/libvpx,luctrudeau/aom,ShiftMediaProject/libvpx,smarter/aom,mwgoldsmith/libvpx,mwgoldsmith/libvpx,felipebetancur/libvpx,liqianggao/libvpx,thdav/aom,zofuthan/libvpx,VTCSecureLLC/libvpx,felipebetancur/libvpx,Topopiccione/libvpx,luctrudeau/aom,luctrudeau/aom,VTCSecureLLC/libvpx,GrokImageCompression/aom,mwgoldsmith/vpx,ShiftMediaProject/libvpx,ShiftMediaProject/libvpx,shyamalschandra/libvpx,liqianggao/libvpx,shacklettbp/aom,shacklettbp/aom,VTCSecureLLC/libvpx,running770/libvpx,GrokImageCompression/aom,webmproject/libvpx,felipebetancur/libvpx,ShiftMediaProject/libvpx,openpeer/libvpx_new,thdav/aom,mwgoldsmith/vpx,smarter/aom,felipebetancur/libvpx,luctrudeau/aom,liqianggao/libvpx