function topupMarketBalance should have a balancedBooks modifier

[code423n4]

Handle

pauliax

Vulnerability details

Impact

I expect every function in the Treasury that interacts with erc20 tokens to have this balancedBooks modifier to make sure that "funds haven't gone missing during this function call". To make sure that tokens were indeed transferred and marketBalance updated, this modifier can be used in function topupMarketBalance.

Recommended Mitigation Steps

Add 'balancedBooks' to the declaration of function topupMarketBalance.

[Splidge]

Duplicate of #23

[dmvt]

duplicate of #112