libavformat/srtp.c:115: error: Uninitialized Value
  The value read from indexbuf[_] was never initialized.

libavformat/srtp.c:115:9: 
113.     AV_WB64(indexbuf, index);
114.     for (i = 0; i < 8; i++) // index << 16
115.         iv[6 + i] ^= indexbuf[i];
             ^
116.     for (i = 0; i < 14; i++)
117.         iv[i] ^= salt[i];
