Enxure that the secondary energy attribute is zeroed-out when revivin…

…g a particle from a secondary

src/particle.cpp

@@ -417,6 +417,7 @@ void Particle::event_revive_from_secondary()
     from_source(&secondary_bank().back());
     secondary_bank().pop_back();
     n_event() = 0;
+    bank_second_E() = 0.0;
 
     // Subtract secondary particle energy from interim pulse-height results
     if (!model::active_pulse_height_tallies.empty() &&