Fix non-virtual dtor warnings

indra/llmath/lloctree.h

@@ -62,6 +62,8 @@ template <class T>
 class LLOctreeTraveler
 {
 public:
+	virtual ~LLOctreeTraveler() = default;
+
 	virtual void traverse(const LLOctreeNode<T>* node);
 	virtual void visit(const LLOctreeNode<T>* branch) = 0;
 };

indra/llui/llbadgeholder.h

@@ -42,6 +42,8 @@ class LLBadgeHolder
 	{
 	}
 
+	virtual ~LLBadgeHolder() = default;
+
 	void setAcceptsBadge(bool acceptsBadge) { mAcceptsBadge = acceptsBadge; }
 	bool acceptsBadge() const { return mAcceptsBadge; }
 

indra/llui/llhelp.h

@@ -31,6 +31,8 @@
 class LLHelp
 {
  public:
+	virtual ~LLHelp() = default;
+
 	virtual void showTopic(const std::string &topic) = 0;
 	virtual std::string getURL(const std::string &topic) = 0;
 	// return default (fallback) topic name suitable for showTopic()

indra/llui/llnotifications.h

@@ -864,6 +864,8 @@ class LLNotificationChannel :
 class LLNotificationsInterface
 {
 public:
+	virtual ~LLNotificationsInterface() = default;
+
 	virtual LLNotificationPtr add(const std::string& name, 
 						const LLSD& substitutions, 
 						const LLSD& payload, 

indra/llui/llspellcheckmenuhandler.h

@@ -30,6 +30,8 @@
 class LLSpellCheckMenuHandler
 {
 public:
+	virtual ~LLSpellCheckMenuHandler() = default;
+
 	virtual bool	getSpellCheck() const			{ return false; }
 
 	virtual const std::string& getSuggestion(U32 index) const	{ return LLStringUtil::null; }

indra/newview/lltransientfloatermgr.h

@@ -78,6 +78,8 @@ class LLTransientFloater
 	 */
 	void init(LLFloater* thiz);
 public:
+	virtual ~LLTransientFloater() = default;
+
 	virtual LLTransientFloaterMgr::ETransientGroup getGroup() = 0;
 	bool isTransientDocked() { return mFloater->isDocked(); };
 	void setTransientVisible(BOOL visible) {mFloater->setVisible(visible); }