Core/Misc: Add missing virtual destructors

src/server/game/Entities/Player/Player.h

@@ -187,6 +187,7 @@ uint32 const ArmorSpecializationIds[MAX_ARMOR_SPECIALIZATION_IDS] = { 86530, 865
 struct SpellModifier
 {
     SpellModifier(Aura* _ownerAura) : op(SpellModOp::HealingAndDamage), type(SPELLMOD_FLAT), value(0), mask(), spellId(0), ownerAura(_ownerAura) { }
+    virtual ~SpellModifier() = default;
 
     SpellModOp op;
     SpellModType type;

src/server/game/Maps/Map.cpp

@@ -68,6 +68,8 @@ GridState* si_GridStates[MAX_GRID_STATE];
 ZoneDynamicInfo::ZoneDynamicInfo() : MusicId(0), DefaultWeather(nullptr), WeatherId(WEATHER_STATE_FINE),
 Intensity(0.0f) { }
 
+RespawnInfo::~RespawnInfo() = default;
+
 Map::~Map()
 {
     // UnloadAll must be called before deleting the map

src/server/game/Maps/Map.h

@@ -121,8 +121,10 @@ using ZoneDynamicInfoMap = std::unordered_map<uint32 /*zoneId*/, ZoneDynamicInfo
 using RespawnListContainer = boost::heap::fibonacci_heap<RespawnInfo*, boost::heap::compare<CompareRespawnInfo>>;
 using RespawnListHandle = RespawnListContainer::handle_type;
 using RespawnInfoMap = std::unordered_map<ObjectGuid::LowType, RespawnInfo*>;
-struct RespawnInfo
+struct TC_GAME_API RespawnInfo
 {
+    virtual ~RespawnInfo();
+
     SpawnObjectType type;
     ObjectGuid::LowType spawnId;
     uint32 entry;