libavcodec/snow.c:1031: error: Uninitialized Value
  The value read from temp[_] was never initialized.

libavcodec/snow.c:1031:9: 
1029.     }
1030.     if(width&1){
1031.         b[x  ] = temp[x  ] - ((temp[x-1]+1)>>1);
              ^
1032.         b[x-1] = temp[x-1] + ((b   [x-2] + b  [x  ]+1)>>1);
1033.     }else
