libavcodec/h264pred.c:277: error: Uninitialized Value
  The value read from t2 was never initialized.

libavcodec/h264pred.c:277:5: 
275.     src[0+2*stride]=(t1 + t2 + 1)>>1;
276.     src[2+0*stride]=
277.     src[1+2*stride]=(t2 + t3 + 1)>>1;
         ^
278.     src[3+0*stride]=
279.     src[2+2*stride]=(t3 + t4+ 1)>>1;
