gFEXDriver FPE issue fixed and gTowerCollection::findTower fixed
With this MR, the FPE problem caused by the gFEXDriver, observed in !45797 (merged) and reported in ATR-24142, is now fixed. The FPE was due to uninitialised variables used in the JwoJ algorithm. The bug related to the LVL1::gTowerContainer::findTower
class reported here, is also addressed with this MR.