bug: setAccountInfo tries to create an existing account, crashing on the attempt

[elboletaire]

Describe the bug
When trying to update an account via setAccountInfo it tries to re-create it rather than update it, crashing on the attempt

To Reproduce

• Use createAccount to ensure your account is created
• Use setAccountInfo trying to update any field (name, description.. doesn't matter)
• You'll get the error vochain replied with error code: (1) checkTx createAccountTx: account already exists

Current behavior
It crashes with the error vochain replied with error code: (1) checkTx createAccountTx: account already exists

Expected behavior
To be able to update the account data.

System:

• SDK Version 0.0.8

[marcvelmer]

Fixed in #149