Clean up trailing whitespace

Marlin/src/gcode/gcode.cpp

@@ -587,7 +587,7 @@ void GcodeSuite::process_parsed_command(
       #if ENABLED(SDSUPPORT)
         case 524: M524(); break;                                   // M524: Abort the current SD print job
       #endif
-      
+
       #if ENABLED(ABORT_ON_ENDSTOP_HIT_FEATURE_ENABLED)
         case 540: M540(); break;                                  // M540: Set abort on endstop hit for SD printing
       #endif