ClosedLoop as singleton

Marlin/src/gcode/calibrate/M12.cpp

@@ -28,9 +28,12 @@
 #include "../../feature/closedloop.h"
 
 void GcodeSuite::M12() {
+
   planner.synchronize();
+
   if (parser.seenval('S'))
-    set_closedloop(parser.value_int()); // Force a CLC set
+    closedloop.set(parser.value_int()); // Force a CLC set
+
 }
 
 #endif