Fix TypeError in call to bcrypt.hashpw

[vt0r]

• At the very least, this TypeError caused logins to fail on my own
  running instance of Synapse, and the simple (explicit) UTF-8
  conversion resolved login errors for me.

Signed-off-by: Salvatore LaMendola salvatore.lamendola@gmail.com

Relevant stack trace bits from when the error was encountered:

  File "/usr/lib/python2.7/dist-packages/synapse/handlers/auth.py", line 629, in validate_hash
    return bcrypt.hashpw(password, stored_hash) == stored_hash
  File "/usr/lib/python2.7/dist-packages/bcrypt/__init__.py", line 57, in hashpw
    raise TypeError("Unicode-objects must be encoded before hashing")

[matrixbot]

Can one of the admins verify this patch?

[matrixbot]

Can one of the admins verify this patch?

[matrixbot]

Can one of the admins verify this patch?

[matrixbot]

Can one of the admins verify this patch?

[matrixbot]

Can one of the admins verify this patch?

[erikjohnston]

@matrixbot ok to test

(Sorry for jenkins being spammy)

[erikjohnston]

Thanks for this!