Fix end of short (auto0.g) prints

Marlin/src/gcode/lcd/M0_M1.cpp

@@ -56,11 +56,9 @@ void GcodeSuite::M0_M1() {
 
   planner.synchronize();
 
+  const bool seenQ = parser.seen('Q');
   #if HAS_LEDS_OFF_FLAG
-    const bool seenQ = parser.seen('Q');
     if (seenQ) printerEventLEDs.onPrintCompleted();      // Change LED color for Print Completed
-  #elif HAS_LCD_MENU
-    constexpr bool seenQ = false;
   #endif
 
   #if HAS_LCD_MENU