libavcodec/ffv1.c:327: error: Uninitialized Value
  The value read from l2tab[_] was never initialized.

libavcodec/ffv1.c:327:25: 
325.                 for(m=0; m<256; m++){
326.                     if(occ[m]){
327.                         len -=occ[m]*(     p *l2tab[    m]
                             ^
328.                                       + (1-p)*l2tab[256-m]);
329.                     }
