Fixed bug in hget function

[ivaxer]

The hget function did not work for single key query.

Example:
redis.hget('table', 'field')

Expected result:
{'field': 'value'}

Actual result:
{'d': 'e', 'e': 'l', 'f': 'v', 'i': 'a', 'l': 'u'}

[rlotun]

Thanks for the contribution!