logic/transaction: variable 'requester' never is declared on verify() function

[jarenal]

Testing logic/transaction module I've noticed that verify() function is using a variable named 'requester' but never is declared.

https://github.com/RiseVision/rise-node/blob/development/logic/transaction.js#L439

Researching about this issue I've discovered that on Lisk version this variable is received as parameter.

https://github.com/LiskHQ/lisk/blob/development/logic/transaction.js#L365

Should we to do the same?