Core/Misc: minor typo and codestyle fixes

- Replace NULL uses in new code with nullptr
- Fix wrong (accumulated) load time log when loading calendar invites
- Make Creature::CanRegenerateHealth const as its just a getter
- Mark OnlyOnceAreaTriggerScript::OnTrigger as final in case someone wants to override that (you are supposed to use protected _OnTrigger hook)

1 files changed, 4 insertions, 4 deletions

diff --git a/src/server/game/Maps/Map.cpp b/src/server/game/Maps/Map.cpp
index f1af14e5b8d..369ecba1c30 100644
--- a/src/server/game/Maps/Map.cpp
+++ b/src/server/game/Maps/Map.cpp
@@ -2975,7 +2975,7 @@ bool Map::CheckRespawn(RespawnInfo* info)
     ObjectGuid thisGUID = ObjectGuid((info->type == SPAWN_TYPE_GAMEOBJECT) ? HighGuid::GameObject : HighGuid::Unit, info->entry, info->spawnId);
     if (time_t linkedTime = GetLinkedRespawnTime(thisGUID))
     {
-        time_t now = time(NULL);
+        time_t now = time(nullptr);
         time_t respawnTime;
         if (linkedTime == std::numeric_limits<time_t>::max())
             respawnTime = linkedTime;
@@ -3006,7 +3006,7 @@ bool Map::CheckRespawn(RespawnInfo* info)
     {
         if (!sScriptMgr->CanSpawn(info->spawnId, info->entry, sObjectMgr->GetCreatureData(info->spawnId), this))
         { // if a script blocks our respawn, schedule next check in a little bit
-            info->respawnTime = time(NULL) + urand(4, 7);
+            info->respawnTime = time(nullptr) + urand(4, 7);
             return false;
         }
     }
@@ -3179,7 +3179,7 @@ void Map::RemoveRespawnTime(RespawnVector& respawnData, bool doRespawn, SQLTrans
 
 void Map::ProcessRespawns()
 {
-    time_t now = time(NULL);
+    time_t now = time(nullptr);
     while (!_respawnTimes.empty())
     {
         RespawnInfo* next = _respawnTimes.top();
@@ -3276,7 +3276,7 @@ bool Map::SpawnGroupSpawn(uint32 groupId, bool ignoreRespawn, bool force, std::v
                     continue;
 
         time_t respawnTime = GetRespawnTime(data->type, data->spawnId);
-        if (respawnTime && respawnTime > time(NULL))
+        if (respawnTime && respawnTime > time(nullptr))
         {
             if (!force && !ignoreRespawn)
                 continue;