libavcodec/h264pred.c:192: error: Uninitialized Value
  The value read from t4 was never initialized.

libavcodec/h264pred.c:192:5: 
190.     src[2+1*stride]=
191.     src[1+2*stride]=
192.     src[0+3*stride]=(t3 + t5 + 2*t4 + 2 + l3 + l5 + 2*l4 + 2)>>3;
         ^
193.     src[3+1*stride]=
194.     src[2+2*stride]=
