Fixed AccountState Sync Issue

[brianlenz]

What current issue(s) does this address, or what feature is it adding?

Explicitly defining lambda for account syncing to fix TypeError: 'AccountState' object is not callable errors.

How did you solve this problem?

Added lambda, per @ixje.

How did you make sure your solution works?

Tested before and after. Errors happening before; syncing works after.

Are there any special changes in the code that we should be aware of?

No.

Please check the following, if applicable:

• Did you add any tests?
• Did you run make lint?
• Did you run make test?
• Are you making a PR to a feature branch or development rather than master?
• Did you add an entry to CHANGELOG.rst? (if not, please do)

[coveralls]

Coverage remained the same at 85.288% when pulling 4c3cdfb on brianlenz:fix_account_sync into c06df37 on CityOfZion:development.

[ixje]

thanks 👍