add A_CANT to dsp method

externals/footils/rx7/pd/rx7~.cpp

@@ -240,7 +240,7 @@ extern "C" void rx7_tilde_setup(void)
 			A_NULL
 			);
 
-	class_addmethod(rx7_class, (t_method)rx7_dsp,      gensym("dsp"),  A_NULL);
+	class_addmethod(rx7_class, (t_method)rx7_dsp,      gensym("dsp"),  A_CANT, A_NULL);
 	class_addmethod(rx7_class, (t_method)rx7_loadbank, gensym("load"), A_GIMME, 0);
 	class_addmethod(rx7_class, (t_method)rx7_note, gensym("note"), A_GIMME, 0);
 	class_addmethod(rx7_class, (t_method)rx7_program_change, gensym("prog"), A_GIMME, 0);