[GAMEPLAY] Lux can't use E upon detonating when dying

When Lux uses E and she presses again to detonate it, and at the same time she dies, she cannot use it anymore. It becomes grey (like abilities when you're dead) and its says 0 mana cost. You can relog, die, level up... It won't work again. So:

1. Use E.
2. Detonate while dying.
3. Lux can no longer use E.