libavcodec/h264pred.c:140: error: Uninitialized Value
  The value read from t4 was never initialized.

libavcodec/h264pred.c:140:5: 
138.     src[2+0*stride]=
139.     src[1+1*stride]=
140.     src[0+2*stride]=(t2 + t4 + 2*t3 + 2)>>2;
         ^
141.     src[3+0*stride]=
142.     src[2+1*stride]=
