Fixed the MSVC compiling error with correct cast
Fixed the MSVC compiling error with correct cast

Change-Id: Ia904f4ec72500d29f1361ce305d8f3231e592f47

shacklettbp/aom,shareefalis/libvpx,gshORTON/webm.libvpx,vasilvv/esvp8,running770/libvpx,iniwf/webm.libvpx,jacklicn/webm.libvpx,thdav/aom,matanbs/webm.libvpx,Topopiccione/libvpx,jdm/libvpx,running770/libvpx,jmvalin/aom,WebRTC-Labs/libvpx,turbulenz/libvpx,goodleixiao/vpx,turbulenz/libvpx,jdm/libvpx,goodleixiao/vpx,goodleixiao/vpx,vasilvv/esvp8,mwgoldsmith/vpx,matanbs/vp982,thdav/aom,Distrotech/libvpx,liqianggao/libvpx,Maria1099/webm.libvpx,jacklicn/webm.libvpx,ittiamvpx/libvpx-1,jmvalin/aom,matanbs/webm.libvpx,Laknot/libvpx,sanyaade-teachings/libvpx,ShiftMediaProject/libvpx,turbulenz/libvpx,cinema6/libvpx,mbebenita/aom,mbebenita/aom,Maria1099/webm.libvpx,kim42083/webm.libvpx,abwiz0086/webm.libvpx,cinema6/libvpx,lyx2014/libvpx_c,mwgoldsmith/vpx,liqianggao/libvpx,jdm/libvpx,VTCSecureLLC/libvpx,openpeer/libvpx_new,ittiamvpx/libvpx,hsueceumd/test_hui,Laknot/libvpx,sanyaade-teachings/libvpx,ittiamvpx/libvpx-1,zofuthan/libvpx,webmproject/libvpx,Suvarna1488/webm.libvpx,hsueceumd/test_hui,abwiz0086/webm.libvpx,kalli123/webm.libvpx,shareefalis/libvpx,n4t/libvpx,iniwf/webm.libvpx,Laknot/libvpx,Acidburn0zzz/webm.libvpx,VTCSecureLLC/libvpx,shacklettbp/aom,thdav/aom,turbulenz/libvpx,openpeer/libvpx_new,gshORTON/webm.libvpx,kim42083/webm.libvpx,felipebetancur/libvpx,lyx2014/libvpx_c,goodleixiao/vpx,smarter/aom,ShiftMediaProject/libvpx,shareefalis/libvpx,kleopatra999/webm.libvpx,Laknot/libvpx,running770/libvpx,goodleixiao/vpx,shareefalis/libvpx,charup/https---github.com-webmproject-libvpx-,jdm/libvpx,GrokImageCompression/aom,VTCSecureLLC/libvpx,smarter/aom,shyamalschandra/libvpx,n4t/libvpx,Acidburn0zzz/webm.libvpx,cinema6/libvpx,Suvarna1488/webm.libvpx,felipebetancur/libvpx,kleopatra999/webm.libvpx,lyx2014/libvpx_c,pcwalton/libvpx,turbulenz/libvpx,felipebetancur/libvpx,liqianggao/libvpx,jmvalin/aom,turbulenz/libvpx,abwiz0086/webm.libvpx,jdm/libvpx,reimaginemedia/webm.libvpx,matanbs/webm.libvpx,gshORTON/webm.libvpx,pcwalton/libvpx,sanyaade-teachings/libvpx,luctrudeau/aom,altogother/webm.libvpx,gshORTON/webm.libvpx,stewnorriss/libvpx,thdav/aom,iniwf/webm.libvpx,luctrudeau/aom,matanbs/vp982,shareefalis/libvpx,VTCSecureLLC/libvpx,kim42083/webm.libvpx,stewnorriss/libvpx,Distrotech/libvpx,cinema6/libvpx,running770/libvpx,VTCSecureLLC/libvpx,Maria1099/webm.libvpx,mwgoldsmith/vpx,mwgoldsmith/libvpx,ShiftMediaProject/libvpx,shacklettbp/aom,gshORTON/webm.libvpx,zofuthan/libvpx,ittiamvpx/libvpx-1,mwgoldsmith/libvpx,sanyaade-teachings/libvpx,charup/https---github.com-webmproject-libvpx-,Distrotech/libvpx,cinema6/libvpx,smarter/aom,openpeer/libvpx_new,kalli123/webm.libvpx,pcwalton/libvpx,mwgoldsmith/libvpx,Acidburn0zzz/webm.libvpx,Laknot/libvpx,iniwf/webm.libvpx,mbebenita/aom,ShiftMediaProject/libvpx,vasilvv/esvp8,shacklettbp/aom,zofuthan/libvpx,reimaginemedia/webm.libvpx,felipebetancur/libvpx,GrokImageCompression/aom,vasilvv/esvp8,reimaginemedia/webm.libvpx,abwiz0086/webm.libvpx,kleopatra999/webm.libvpx,Acidburn0zzz/webm.libvpx,matanbs/webm.libvpx,Acidburn0zzz/webm.libvpx,matanbs/vp982,shyamalschandra/libvpx,reimaginemedia/webm.libvpx,kalli123/webm.libvpx,ittiamvpx/libvpx,jdm/libvpx,matanbs/vp982,pcwalton/libvpx,mwgoldsmith/vpx,iniwf/webm.libvpx,charup/https---github.com-webmproject-libvpx-,matanbs/webm.libvpx,altogother/webm.libvpx,Topopiccione/libvpx,Topopiccione/libvpx,Topopiccione/libvpx,altogother/webm.libvpx,shyamalschandra/libvpx,vasilvv/esvp8,turbulenz/libvpx,altogother/webm.libvpx,n4t/libvpx,jmvalin/aom,cinema6/libvpx,pcwalton/libvpx,smarter/aom,mbebenita/aom,mbebenita/aom,iniwf/webm.libvpx,kim42083/webm.libvpx,openpeer/libvpx_new,VTCSecureLLC/libvpx,mbebenita/aom,shyamalschandra/libvpx,kleopatra999/webm.libvpx,openpeer/libvpx_new,abwiz0086/webm.libvpx,kleopatra999/webm.libvpx,hsueceumd/test_hui,webmproject/libvpx,hsueceumd/test_hui,zofuthan/libvpx,turbulenz/libvpx,mwgoldsmith/libvpx,Suvarna1488/webm.libvpx,mbebenita/aom,Topopiccione/libvpx,smarter/aom,liqianggao/libvpx,ittiamvpx/libvpx-1,matanbs/webm.libvpx,hsueceumd/test_hui,Distrotech/libvpx,felipebetancur/libvpx,hsueceumd/test_hui,mbebenita/aom,kim42083/webm.libvpx,lyx2014/libvpx_c,shyamalschandra/libvpx,stewnorriss/libvpx,ittiamvpx/libvpx,Suvarna1488/webm.libvpx,liqianggao/libvpx,matanbs/vp982,charup/https---github.com-webmproject-libvpx-,kleopatra999/webm.libvpx,Laknot/libvpx,turbulenz/libvpx,jacklicn/webm.libvpx,mwgoldsmith/libvpx,kalli123/webm.libvpx,lyx2014/libvpx_c,luctrudeau/aom,GrokImageCompression/aom,Maria1099/webm.libvpx,Suvarna1488/webm.libvpx,WebRTC-Labs/libvpx,felipebetancur/libvpx,stewnorriss/libvpx,webmproject/libvpx,vasilvv/esvp8,stewnorriss/libvpx,shyamalschandra/libvpx,mwgoldsmith/vpx,pcwalton/libvpx,ittiamvpx/libvpx-1,luctrudeau/aom,kim42083/webm.libvpx,vasilvv/esvp8,cinema6/libvpx,shacklettbp/aom,matanbs/vp982,ShiftMediaProject/libvpx,Distrotech/libvpx,GrokImageCompression/aom,stewnorriss/libvpx,GrokImageCompression/aom,ittiamvpx/libvpx-1,webmproject/libvpx,webmproject/libvpx,n4t/libvpx,webmproject/libvpx,reimaginemedia/webm.libvpx,WebRTC-Labs/libvpx,Distrotech/libvpx,ittiamvpx/libvpx,jacklicn/webm.libvpx,WebRTC-Labs/libvpx,abwiz0086/webm.libvpx,shareefalis/libvpx,Topopiccione/libvpx,sanyaade-teachings/libvpx,reimaginemedia/webm.libvpx,thdav/aom,mbebenita/aom,luctrudeau/aom,GrokImageCompression/aom,kalli123/webm.libvpx,shacklettbp/aom,ittiamvpx/libvpx,zofuthan/libvpx,lyx2014/libvpx_c,mwgoldsmith/libvpx,gshORTON/webm.libvpx,jmvalin/aom,goodleixiao/vpx,Acidburn0zzz/webm.libvpx,luctrudeau/aom,thdav/aom,zofuthan/libvpx,ittiamvpx/libvpx,matanbs/vp982,Suvarna1488/webm.libvpx,jacklicn/webm.libvpx,altogother/webm.libvpx,liqianggao/libvpx,charup/https---github.com-webmproject-libvpx-,mwgoldsmith/vpx,charup/https---github.com-webmproject-libvpx-,Maria1099/webm.libvpx,running770/libvpx,jacklicn/webm.libvpx,Maria1099/webm.libvpx,WebRTC-Labs/libvpx,running770/libvpx,smarter/aom,jmvalin/aom,altogother/webm.libvpx,n4t/libvpx,openpeer/libvpx_new,kalli123/webm.libvpx