Zero power consumption and zero generation causes EnergyManagement to schedule event at infinity

[edlongman]

<!> Cannot convert -inf to simtime_t: Out of range (-9223372.036854775807,9223372.036854775807), allowed by scale exponent -12 -- in module (inet::power::SimpleEpEnergyStorage) CentralHubWirelessGrid150m.node[0].energyStorage (id=260), during network initialization

inet/src/inet/power/storage/SimpleEpEnergyStorage.cc

Line 164 in 78e5ca2

simtime_t remainingTime = unit((targetCapacity - residualCapacity) / totalPower / s(1)).get();