Use parent blocked() to avoid code duplication.
Use parent blocked() to avoid code duplication.

	* src/runner/at_handler.cc (blocked): Use parent blocked()
	instead of repeating the logic.

urbiforge/urbi,urbiforge/urbi,aldebaran/urbi,urbiforge/urbi,urbiforge/urbi,urbiforge/urbi,urbiforge/urbi,aldebaran/urbi,urbiforge/urbi,urbiforge/urbi,aldebaran/urbi,aldebaran/urbi,aldebaran/urbi,aldebaran/urbi,aldebaran/urbi,urbiforge/urbi,aldebaran/urbi