Added destructors for the classes in order to use the PIMPL idiom with

uniqe_ptr

src/msgPrintControl.h

@@ -84,6 +84,12 @@ template <> struct hash<msgPrintControlKey> {
  */
 class msgPrintControl {
   public:
+    /**
+     * @brief Destroy the msgPrintControl object
+     *
+     */
+    ~msgPrintControl();
+
     /**
      * @brief Checks if the error message associated with "key" has been printed
      * more than `this->maxRepetitions_` times in a row. If yes, returns false,