Core/Spells: implemented SpellPriority field from SpellEntry to cleanup charged mod proc behaviour

- Only one charged mod will be consumed per SpellMod apply, and it'll be compared against other mod priority
- This is proper way of handling Backdraft/Backlash and Deathchill/Killing Machine

Thanks to killerwife for info

1 files changed, 1 insertions, 0 deletions

diff --git a/src/server/game/Spells/SpellInfo.cpp b/src/server/game/Spells/SpellInfo.cpp
index 873bfbefdcf..88958e97fd3 100644
--- a/src/server/game/Spells/SpellInfo.cpp
+++ b/src/server/game/Spells/SpellInfo.cpp
@@ -841,6 +841,7 @@ SpellInfo::SpellInfo(SpellEntry const* spellEntry)
 
     SpellIconID = spellEntry->SpellIconID;
     ActiveIconID = spellEntry->activeIconID;
+    Priority = spellEntry->SpellPriority;
     for (uint8 i = 0; i < 16; ++i)
         SpellName[i] = spellEntry->SpellName[i];