libavcodec/h264pred.c:161: error: Uninitialized Value
  The value read from l2 was never initialized.

libavcodec/h264pred.c:161:5: 
159.     src[0+0*stride]=(l1 + t1)>>1;
160.     src[1+0*stride]=
161.     src[0+1*stride]=(l2 + t2)>>1;
         ^
162.     src[2+0*stride]=
163.     src[1+1*stride]=
