libavcodec/ralf.c:97: error: Uninitialized Value
  The value read from counts[_] was never initialized.

libavcodec/ralf.c:97:9: 
95.     prefixes[1] = 0;
96.     for (i = 1; i <= 16; i++)
97.         prefixes[i + 1] = (prefixes[i] + counts[i]) << 1;
            ^
98. 
99.     for (i = 0; i < elems; i++)
