HGETALL in a pipeline results in an exception

[ducharmemp]

call in a pipeline context returns nil always because the pipeline is gathering up all the results. When calling HGETALL, the protocol-redis gem wants to immediately turn the result of that call into a hash by calling each_slice(2) which explodes. Minimal repro:

REDIS.pipeline do |context|
  context.hgetall("foobar") # 💥 
end

REDIS.hgetall("foobar") # {}