newer standards prefer nullptr over NULL - this is most of them but there are others too

engine/shared/library/sharedSkillSystem/src/shared/ExpertiseManager.cpp

@@ -298,7 +298,7 @@ int const ExpertiseManager::getNumExpertiseTiers()
  *             exist.
  * 
  * @return - skill object for expertise at grid location.
- *         returns NULL if none found
+ *         returns nullptr if none found
  */
 SkillObject const * ExpertiseManager::getExpertiseSkillAt(int tree, int tier, int grid, int rank)
 {

engine/shared/library/sharedSkillSystem/src/shared/LevelManager.cpp

@@ -335,7 +335,7 @@ void LevelManager::updateLevelDataWithSkill(LevelData &levelData, std::string co
 
 //======================================================================
 // Find the level corresponding to the xp value and
-//   returns null if not found
+//   returns nullptr if not found
 LevelRecord const * LevelManagerNamespace::getLevelRecord(int xp)
 {
 	LevelRecordsIterator itr = ms_levelRecords.begin();
@@ -365,7 +365,7 @@ LevelRecord const * LevelManagerNamespace::getLevelRecord(int xp)
 
 	WARNING(true, ("getLevelRecord: Couldn't find level for xp value[%d]\n", xp));
 
-	return NULL;
+	return nullptr;
 }
 
 //======================================================================

engine/shared/library/sharedSkillSystem/src/shared/SkillManager.cpp

@@ -18,7 +18,7 @@
 #include <unordered_map>
 #include <string>
 
-SkillManager      *SkillManager::ms_instance = NULL;
+SkillManager      *SkillManager::ms_instance = nullptr;
 const std::string &SkillManager::cms_skillsDatatableName = "datatables/skill/skills.iff";
 
 //-----------------------------------------------------------------
@@ -92,7 +92,7 @@ void SkillManager::remove()
 {
 	DEBUG_FATAL (!ms_instance, ("SkillManager not installed"));
 	delete ms_instance;
-	ms_instance = NULL;
+	ms_instance = nullptr;
 }
 
 //----------------------------------------------------------------------
@@ -170,7 +170,7 @@ const SkillObject * SkillManager::loadSkill(const std::string & skillName)
 
 uint32 SkillManager::getDefaultXpLimit(const std::string & experienceType)
 {
-	if (m_xpLimitMap != NULL)
+	if (m_xpLimitMap != nullptr)
 	{
 		XpLimitMap::const_iterator result = m_xpLimitMap->find(experienceType);
 		if (result != m_xpLimitMap->end())
@@ -183,13 +183,13 @@ uint32 SkillManager::getDefaultXpLimit(const std::string & experienceType)
 
 void SkillManager::initXpLimits()
 {
-	if (m_xpLimitTable == NULL)
+	if (m_xpLimitTable == nullptr)
 	{
 		WARNING(true, ("SkillManager::initXpLimits, m_xpLimitTable not initialized"));
 		return;
 	}
 
-	if (m_xpLimitMap == NULL)
+	if (m_xpLimitMap == nullptr)
 	{
 		WARNING(true, ("SkillManager::initXpLimits, m_xpLimitMap not initialized"));
 		return;