libavcodec/h264pred.c:188: error: Uninitialized Value
  The value read from t4 was never initialized.

libavcodec/h264pred.c:188:5: 
186.     src[2+0*stride]=
187.     src[1+1*stride]=
188.     src[0+2*stride]=(t2 + t4 + 2*t3 + 2 + l2 + l4 + 2*l3 + 2)>>3;
         ^
189.     src[3+0*stride]=
190.     src[2+1*stride]=
