libavcodec/h264pred.c:401: error: Uninitialized Value
  The value read from l0 was never initialized.

libavcodec/h264pred.c:401:5: 
399. 
400.     src[0+0*stride]=
401.     src[2+1*stride]=(lt + l0 + 1)>>1;
         ^
402.     src[1+0*stride]=
403.     src[3+1*stride]=(l0 + 2*lt + t0 + 2)>>2;
