Replace heap with stack memory allocation
Replace heap with stack memory allocation

Replaced the dynamic memory allocation of the
second_pred buffer with an allocation on the stack.

Change-Id: I2716c46b71e8587714ca5733a99eca2c68419b23

shyamalschandra/libvpx,iniwf/webm.libvpx,thdav/aom,smarter/aom,shacklettbp/aom,smarter/aom,shacklettbp/aom,GrokImageCompression/aom,lyx2014/libvpx_c,stewnorriss/libvpx,iniwf/webm.libvpx,shacklettbp/aom,stewnorriss/libvpx,shacklettbp/aom,smarter/aom,Maria1099/webm.libvpx,felipebetancur/libvpx,shyamalschandra/libvpx,mwgoldsmith/vpx,ShiftMediaProject/libvpx,jacklicn/webm.libvpx,VTCSecureLLC/libvpx,mwgoldsmith/libvpx,jmvalin/aom,Maria1099/webm.libvpx,mwgoldsmith/libvpx,stewnorriss/libvpx,thdav/aom,Suvarna1488/webm.libvpx,gshORTON/webm.libvpx,kim42083/webm.libvpx,reimaginemedia/webm.libvpx,Suvarna1488/webm.libvpx,lyx2014/libvpx_c,zofuthan/libvpx,liqianggao/libvpx,stewnorriss/libvpx,kim42083/webm.libvpx,Topopiccione/libvpx,Topopiccione/libvpx,kim42083/webm.libvpx,abwiz0086/webm.libvpx,GrokImageCompression/aom,kalli123/webm.libvpx,ShiftMediaProject/libvpx,zofuthan/libvpx,openpeer/libvpx_new,Maria1099/webm.libvpx,iniwf/webm.libvpx,jmvalin/aom,felipebetancur/libvpx,GrokImageCompression/aom,mwgoldsmith/libvpx,kleopatra999/webm.libvpx,kleopatra999/webm.libvpx,ittiamvpx/libvpx-1,thdav/aom,ShiftMediaProject/libvpx,gshORTON/webm.libvpx,felipebetancur/libvpx,gshORTON/webm.libvpx,jacklicn/webm.libvpx,luctrudeau/aom,jmvalin/aom,Suvarna1488/webm.libvpx,mwgoldsmith/libvpx,VTCSecureLLC/libvpx,jmvalin/aom,ittiamvpx/libvpx-1,lyx2014/libvpx_c,altogother/webm.libvpx,lyx2014/libvpx_c,mwgoldsmith/vpx,luctrudeau/aom,luctrudeau/aom,webmproject/libvpx,iniwf/webm.libvpx,mbebenita/aom,mbebenita/aom,mbebenita/aom,mbebenita/aom,VTCSecureLLC/libvpx,abwiz0086/webm.libvpx,luctrudeau/aom,jacklicn/webm.libvpx,felipebetancur/libvpx,mwgoldsmith/vpx,webmproject/libvpx,ittiamvpx/libvpx-1,kleopatra999/webm.libvpx,VTCSecureLLC/libvpx,running770/libvpx,goodleixiao/vpx,openpeer/libvpx_new,liqianggao/libvpx,GrokImageCompression/aom,ittiamvpx/libvpx-1,reimaginemedia/webm.libvpx,reimaginemedia/webm.libvpx,Suvarna1488/webm.libvpx,mwgoldsmith/vpx,zofuthan/libvpx,kim42083/webm.libvpx,mbebenita/aom,shyamalschandra/libvpx,jacklicn/webm.libvpx,Topopiccione/libvpx,Maria1099/webm.libvpx,Topopiccione/libvpx,kim42083/webm.libvpx,iniwf/webm.libvpx,smarter/aom,thdav/aom,goodleixiao/vpx,kim42083/webm.libvpx,thdav/aom,Acidburn0zzz/webm.libvpx,altogother/webm.libvpx,jmvalin/aom,altogother/webm.libvpx,shyamalschandra/libvpx,goodleixiao/vpx,kalli123/webm.libvpx,running770/libvpx,shyamalschandra/libvpx,Suvarna1488/webm.libvpx,gshORTON/webm.libvpx,iniwf/webm.libvpx,liqianggao/libvpx,luctrudeau/aom,mwgoldsmith/vpx,stewnorriss/libvpx,shacklettbp/aom,kalli123/webm.libvpx,mbebenita/aom,ShiftMediaProject/libvpx,goodleixiao/vpx,gshORTON/webm.libvpx,running770/libvpx,thdav/aom,ittiamvpx/libvpx-1,running770/libvpx,zofuthan/libvpx,zofuthan/libvpx,liqianggao/libvpx,zofuthan/libvpx,VTCSecureLLC/libvpx,mwgoldsmith/libvpx,jacklicn/webm.libvpx,kalli123/webm.libvpx,reimaginemedia/webm.libvpx,GrokImageCompression/aom,abwiz0086/webm.libvpx,webmproject/libvpx,altogother/webm.libvpx,VTCSecureLLC/libvpx,reimaginemedia/webm.libvpx,kalli123/webm.libvpx,openpeer/libvpx_new,stewnorriss/libvpx,mwgoldsmith/vpx,Topopiccione/libvpx,lyx2014/libvpx_c,openpeer/libvpx_new,smarter/aom,goodleixiao/vpx,Acidburn0zzz/webm.libvpx,goodleixiao/vpx,Acidburn0zzz/webm.libvpx,abwiz0086/webm.libvpx,Acidburn0zzz/webm.libvpx,abwiz0086/webm.libvpx,Suvarna1488/webm.libvpx,ShiftMediaProject/libvpx,jmvalin/aom,kalli123/webm.libvpx,felipebetancur/libvpx,felipebetancur/libvpx,jacklicn/webm.libvpx,reimaginemedia/webm.libvpx,lyx2014/libvpx_c,liqianggao/libvpx,gshORTON/webm.libvpx,Acidburn0zzz/webm.libvpx,webmproject/libvpx,abwiz0086/webm.libvpx,running770/libvpx,altogother/webm.libvpx,mbebenita/aom,Maria1099/webm.libvpx,mbebenita/aom,running770/libvpx,kleopatra999/webm.libvpx,Acidburn0zzz/webm.libvpx,GrokImageCompression/aom,kleopatra999/webm.libvpx,altogother/webm.libvpx,kleopatra999/webm.libvpx,mbebenita/aom,ittiamvpx/libvpx-1,liqianggao/libvpx,webmproject/libvpx,Maria1099/webm.libvpx,webmproject/libvpx,shyamalschandra/libvpx,smarter/aom,shacklettbp/aom,mwgoldsmith/libvpx,openpeer/libvpx_new,Topopiccione/libvpx,luctrudeau/aom,openpeer/libvpx_new