Failure to decode header block results in error

[CrowdHailer]

Hi,
I'm running h2spec against a server implementation I have that is using this library. One of the tests in there (HPACK/5.2 - 3: Sends a Huffman-encoded string literal representation containing the EOS symbol) sends a header_block that causes an error to be raised rather than the library returning an :error tuple.

The following code execution will reproduce it

# iex(2)> header_block = <<130, 135, 132, 65, 138, 8, 157, 92, 11, 129, 112, 220, 121, 166, 153, 0, 133,
  242, 178, 74, 135, 255, 255, 255, 253, 37, 66, 127>>
<<130, 135, 132, 65, 138, 8, 157, 92, 11, 129, 112, 220, 121, 166, 153, 0, 133,
  242, 178, 74, 135, 255, 255, 255, 253, 37, 66, 127>>
# iex(3)> decode_context = :hpack.new_context(1_000) 
{:hpack_context, {:dynamic_table, [], 4096, 0}, 1000}
# iex(4)> :hpack.decode(header_block, decode_context)
** (MatchError) no match of right hand side value: "B\d"
    (hpack) /vagrant/Ace/examples/hello_http2/deps/hpack/src/hpack_string.erl:14: :hpack_string.decode/1
    (hpack) /vagrant/Ace/examples/hello_http2/deps/hpack/src/hpack.erl:188: :hpack.decode_literal_header_without_indexing/3

above is Elixir syntax. I can translate it to erlang if need be but I though would start copying verbatim so no mistakes.