libavcodec/snow.c:1025: error: Uninitialized Value
  The value read from temp[_] was never initialized.

libavcodec/snow.c:1025:5: 
1023.         temp[2*x    ]= b[x   ];
1024. 
1025.     b[0] = temp[0] - ((temp[1]+1)>>1);
          ^
1026.     for(x=2; x<width-1; x+=2){
1027.         b[x  ] = temp[x  ] - ((temp[x-1] + temp[x+1]+2)>>2);
