message: Fixing missing const in "what" function of the exceptions thrown by the mask handler
diff: @@ -128,7 +128,7 @@ public:
  * @brief Get default error message
  * @return Error message
  */
  - virtual const char *what() throw() { return "Geometry is not initalized"; }
  + virtual const char *what() const throw() { return "Geometry is not initalized"; }
  };
  /**
  @@ -157,7 +157,7 @@ public:
  * @brief Get default error message
  * @return Error message
  */
  - virtual const char *what() throw() { return "OCDB Manager was not initialized"; }
  + virtual const char *what() const throw() { return "OCDB Manager was not initialized"; }
  };
  /**
  