This PR fixes a low severity audit finding by Ackee:
It is possible to set the resetTimeMin to 0. When the resetBaseMin is bigger
than 0 and the resetTimeMin is 0, then the branch with modulo operation is
triggered and it will cause a division by zero. Since it is also in Solidity version
<0.8.0, it consumes all gas.
This PR fixes a low severity audit finding by Ackee: