fix(Singleton): delete properly instance at program termination

src/cpim/header/cpim-generic-header.cpp

@@ -32,8 +32,8 @@ using namespace LinphonePrivate;
 
 class Cpim::GenericHeaderPrivate : public HeaderPrivate {
 public:
-	GenericHeaderPrivate() : parameters(make_shared< list< pair<string, string> > >()){
-	}
+	GenericHeaderPrivate () : parameters(make_shared<list<pair<string, string> > >()) {}
+
 	string name;
 	shared_ptr<list<pair<string, string> > > parameters;
 };

src/object/singleton.h

@@ -30,8 +30,10 @@ namespace LinphonePrivate {
 		virtual ~Singleton () = default;
 
 		static T *getInstance () {
-			if (!mInstance)
+			if (!mInstance) {
 				mInstance = new T();
+				static SingletonDeleter deleter;
+			}
 			return mInstance;
 		}
 
@@ -39,6 +41,12 @@ namespace LinphonePrivate {
 		explicit Singleton (ObjectPrivate &p) : Object(p) {}
 
 	private:
+		struct SingletonDeleter {
+			~SingletonDeleter () {
+				delete mInstance;
+			}
+		};
+
 		static T *mInstance;
 
 		L_DISABLE_COPY(Singleton);