Patched up, cleaned up

Marlin/Marlin.h

@@ -209,10 +209,9 @@ void manage_inactivity(bool ignore_stepper_queue = false);
 
 #endif // !MIXING_EXTRUDER
 
-#define G38_2_3
-#ifdef G38_2_3
-extern bool G38_flag ;   //flag to tell the interrupt handler that a G38 command is being run
-extern bool G38_flag_pass ;   //flag from the interrupt handler to indicate if the endstop went active
+#if ENABLED(G38_2_3)
+  extern bool G38_move,        // flag to tell the interrupt handler that a G38 command is being run
+              G38_endstop_hit; // flag from the interrupt handler to indicate if the endstop went active
 #endif
 
 /**