Fix "used uninitialized" warning in vp8_pack_bitstream()
Fix "used uninitialized" warning in vp8_pack_bitstream()

Change-Id: Iadcbdba717439f47a2c24e65fd69a3a1464174b5

GrokImageCompression/aom,kalli123/webm.libvpx,vasilvv/esvp8,mwgoldsmith/vpx,zofuthan/libvpx,lyx2014/libvpx_c,iniwf/webm.libvpx,jmvalin/aom,Acidburn0zzz/webm.libvpx,Maria1099/webm.libvpx,n4t/libvpx,WebRTC-Labs/libvpx,mwgoldsmith/vpx,mbebenita/aom,kim42083/webm.libvpx,shyamalschandra/libvpx,shacklettbp/aom,webmproject/libvpx,VTCSecureLLC/libvpx,webmproject/libvpx,ittiamvpx/libvpx-1,kalli123/webm.libvpx,shyamalschandra/libvpx,shareefalis/libvpx,iniwf/webm.libvpx,altogother/webm.libvpx,charup/https---github.com-webmproject-libvpx-,rikaunite/gst-opera_libvpx,n4t/libvpx,liqianggao/libvpx,charup/https---github.com-webmproject-libvpx-,running770/libvpx,ittiamvpx/libvpx,Maria1099/webm.libvpx,shareefalis/libvpx,Topopiccione/libvpx,gshORTON/webm.libvpx,shacklettbp/aom,matanbs/webm.libvpx,Laknot/libvpx,matanbs/vp982,VTCSecureLLC/libvpx,smarter/aom,cinema6/libvpx,Distrotech/libvpx,felipebetancur/libvpx,kleopatra999/webm.libvpx,kalli123/webm.libvpx,lyx2014/libvpx_c,running770/libvpx,vasilvv/esvp8,pcwalton/libvpx,thdav/aom,jmvalin/aom,thdav/aom,iniwf/webm.libvpx,liqianggao/libvpx,jacklicn/webm.libvpx,ShiftMediaProject/libvpx,goodleixiao/vpx,shacklettbp/aom,reimaginemedia/webm.libvpx,reimaginemedia/webm.libvpx,kim42083/webm.libvpx,enmasse-entertainment/libvpx,abwiz0086/webm.libvpx,genesi/libvpx0,turbulenz/libvpx,kalli123/webm.libvpx,Suvarna1488/webm.libvpx,running770/libvpx,mwgoldsmith/libvpx,Acidburn0zzz/webm.libvpx,GrokImageCompression/aom,turbulenz/libvpx,WebRTC-Labs/libvpx,n4t/libvpx,thdav/aom,VTCSecureLLC/libvpx,jdm/libvpx,shyamalschandra/libvpx,awatry/libvpx.opencl,jdm/libvpx,hsueceumd/test_hui,reimaginemedia/webm.libvpx,thdav/aom,rikaunite/gst-opera_libvpx,ittiamvpx/libvpx,luctrudeau/aom,felipebetancur/libvpx,Suvarna1488/webm.libvpx,Distrotech/libvpx,sanyaade-teachings/libvpx,altogother/webm.libvpx,charup/https---github.com-webmproject-libvpx-,mwgoldsmith/vpx,awatry/libvpx.opencl,matanbs/webm.libvpx,openpeer/libvpx_new,luctrudeau/aom,mwgoldsmith/vpx,turbulenz/libvpx,mbebenita/aom,turbulenz/libvpx,luctrudeau/aom,matanbs/webm.libvpx,Laknot/libvpx,enmasse-entertainment/libvpx,mwgoldsmith/vpx,Topopiccione/libvpx,pcwalton/libvpx,jmvalin/aom,gshORTON/webm.libvpx,smarter/aom,openpeer/libvpx_new,abwiz0086/webm.libvpx,goodleixiao/vpx,jmvalin/aom,ittiamvpx/libvpx-1,shareefalis/libvpx,ittiamvpx/libvpx-1,stewnorriss/libvpx,felipebetancur/libvpx,liqianggao/libvpx,stewnorriss/libvpx,matanbs/vp982,mwgoldsmith/vpx,charup/https---github.com-webmproject-libvpx-,mbebenita/aom,Maria1099/webm.libvpx,sanyaade-teachings/libvpx,kim42083/webm.libvpx,turbulenz/libvpx,altogother/webm.libvpx,shacklettbp/aom,abwiz0086/webm.libvpx,cinema6/libvpx,smarter/aom,Topopiccione/libvpx,turbulenz/libvpx,genesi/libvpx0,vasilvv/esvp8,smarter/aom,zofuthan/libvpx,mwgoldsmith/libvpx,Topopiccione/libvpx,ittiamvpx/libvpx,mbebenita/aom,GrokImageCompression/aom,enmasse-entertainment/libvpx,awatry/libvpx.opencl,reimaginemedia/webm.libvpx,shacklettbp/aom,felipebetancur/libvpx,mbebenita/aom,abwiz0086/webm.libvpx,WebRTC-Labs/libvpx,matanbs/webm.libvpx,turbulenz/libvpx,Maria1099/webm.libvpx,sanyaade-teachings/libvpx,lyx2014/libvpx_c,webmproject/libvpx,luctrudeau/aom,pcwalton/libvpx,kleopatra999/webm.libvpx,gshORTON/webm.libvpx,awatry/libvpx.opencl,charup/https---github.com-webmproject-libvpx-,thdav/aom,zofuthan/libvpx,ShiftMediaProject/libvpx,matanbs/vp982,running770/libvpx,sanyaade-teachings/libvpx,Laknot/libvpx,Laknot/libvpx,mwgoldsmith/libvpx,genesi/libvpx0,kleopatra999/webm.libvpx,mwgoldsmith/libvpx,lyx2014/libvpx_c,gshORTON/webm.libvpx,stewnorriss/libvpx,iniwf/webm.libvpx,jacklicn/webm.libvpx,Acidburn0zzz/webm.libvpx,GrokImageCompression/aom,stewnorriss/libvpx,enmasse-entertainment/libvpx,matanbs/vp982,cinema6/libvpx,kleopatra999/webm.libvpx,mwgoldsmith/libvpx,reimaginemedia/webm.libvpx,kim42083/webm.libvpx,matanbs/vp982,Distrotech/libvpx,jdm/libvpx,gshORTON/webm.libvpx,luctrudeau/aom,shyamalschandra/libvpx,shareefalis/libvpx,cinema6/libvpx,Suvarna1488/webm.libvpx,zofuthan/libvpx,jmvalin/aom,openpeer/libvpx_new,matanbs/webm.libvpx,ittiamvpx/libvpx-1,WebRTC-Labs/libvpx,running770/libvpx,iniwf/webm.libvpx,Laknot/libvpx,openpeer/libvpx_new,pcwalton/libvpx,Suvarna1488/webm.libvpx,VTCSecureLLC/libvpx,Topopiccione/libvpx,thdav/aom,Distrotech/libvpx,iniwf/webm.libvpx,kim42083/webm.libvpx,goodleixiao/vpx,GrokImageCompression/aom,zofuthan/libvpx,vasilvv/esvp8,VTCSecureLLC/libvpx,hsueceumd/test_hui,mbebenita/aom,ShiftMediaProject/libvpx,jdm/libvpx,jacklicn/webm.libvpx,abwiz0086/webm.libvpx,pcwalton/libvpx,shacklettbp/aom,kleopatra999/webm.libvpx,kim42083/webm.libvpx,turbulenz/libvpx,mwgoldsmith/libvpx,Acidburn0zzz/webm.libvpx,ittiamvpx/libvpx,altogother/webm.libvpx,jmvalin/aom,altogother/webm.libvpx,Maria1099/webm.libvpx,ittiamvpx/libvpx-1,Distrotech/libvpx,zofuthan/libvpx,lyx2014/libvpx_c,webmproject/libvpx,genesi/libvpx0,ittiamvpx/libvpx-1,openpeer/libvpx_new,felipebetancur/libvpx,Maria1099/webm.libvpx,kleopatra999/webm.libvpx,ShiftMediaProject/libvpx,jdm/libvpx,vasilvv/esvp8,Acidburn0zzz/webm.libvpx,WebRTC-Labs/libvpx,VTCSecureLLC/libvpx,n4t/libvpx,vasilvv/esvp8,hsueceumd/test_hui,shareefalis/libvpx,webmproject/libvpx,vasilvv/esvp8,kalli123/webm.libvpx,GrokImageCompression/aom,smarter/aom,shareefalis/libvpx,mbebenita/aom,smarter/aom,mbebenita/aom,ShiftMediaProject/libvpx,stewnorriss/libvpx,Acidburn0zzz/webm.libvpx,kalli123/webm.libvpx,turbulenz/libvpx,goodleixiao/vpx,sanyaade-teachings/libvpx,n4t/libvpx,liqianggao/libvpx,luctrudeau/aom,charup/https---github.com-webmproject-libvpx-,stewnorriss/libvpx,shyamalschandra/libvpx,cinema6/libvpx,jacklicn/webm.libvpx,rikaunite/gst-opera_libvpx,Suvarna1488/webm.libvpx,rikaunite/gst-opera_libvpx,matanbs/vp982,running770/libvpx,cinema6/libvpx,Laknot/libvpx,jacklicn/webm.libvpx,openpeer/libvpx_new,rikaunite/gst-opera_libvpx,cinema6/libvpx,liqianggao/libvpx,ittiamvpx/libvpx,Suvarna1488/webm.libvpx,liqianggao/libvpx,goodleixiao/vpx,matanbs/webm.libvpx,enmasse-entertainment/libvpx,abwiz0086/webm.libvpx,altogother/webm.libvpx,matanbs/vp982,felipebetancur/libvpx,jacklicn/webm.libvpx,hsueceumd/test_hui,webmproject/libvpx,shyamalschandra/libvpx,genesi/libvpx0,pcwalton/libvpx,mbebenita/aom,hsueceumd/test_hui,genesi/libvpx0,hsueceumd/test_hui,lyx2014/libvpx_c,jdm/libvpx,Topopiccione/libvpx,goodleixiao/vpx,Distrotech/libvpx,reimaginemedia/webm.libvpx,gshORTON/webm.libvpx,ittiamvpx/libvpx