Fewer warnings

Marlin/src/module/printcounter.cpp

@@ -43,6 +43,7 @@ Stopwatch print_job_timer;      // Global Print Job Timer instance
 
 #if PRINTCOUNTER_SYNC
   #include "../module/planner.h"
+  #warning "To prevent step loss, motion will pause for PRINTCOUNTER auto-save."
 #endif
 
 // Service intervals