Clean trailing whitespace

Marlin/src/feature/Max7219_Debug_LEDs.h

  * support functions available to control the LEDs in the 8x8 grid.
  *
  * If you are using the Max7219 matrix for firmware debug purposes in time sensitive
- * areas of the code, please be aware that the orientation (rotation) of the display can 
+ * areas of the code, please be aware that the orientation (rotation) of the display can
  * affect the speed.   The Max7219 can update a single column fairly fast.  It is much
  * faster to do a Max7219_Set_Column() with a rotation of 90 or 270 degrees than to do
  * a Max7219_Set_Row().    The opposite is true for rotations of 0 or 180 degrees.
   #define MAX7219_Y_LEDS          8
   #define MAX7219_X_LEDS          (MAX7219_Y_LEDS * (MAX7219_NUMBER_UNITS))
   #define XOR_7219(x, y)          LEDs[(x & 0xF8) + y] ^= _BV(7 - (x & 0x07))
-  #define SET_PIXEL_7219(x, y)    LEDs[(x & 0xF8) + y] |= _BV(7 - (x & 0x07)) 
+  #define SET_PIXEL_7219(x, y)    LEDs[(x & 0xF8) + y] |= _BV(7 - (x & 0x07))
   #define CLEAR_PIXEL_7219(x, y)  LEDs[(x & 0xF8) + y] &= (_BV(7 - (x & 0x07)) ^ 0xFF)
   #define BIT_7219(x, y)          TEST(LEDs[(x & 0xF8) + y], 7 - (x & 0x07))
   #define SEND_7219(R) do {for(int8_t jj = 0; jj < MAX7219_NUMBER_UNITS; jj++) Max7219(max7219_reg_digit0 + (R & 0x7), LEDs[(R & 0x7) + jj * 8]); Max7219_pulse_load(); } while (0);
   #define MAX7219_Y_LEDS          8
   #define MAX7219_X_LEDS          (MAX7219_Y_LEDS * (MAX7219_NUMBER_UNITS))
   #define XOR_7219(x, y)          LEDs[y + (MAX7219_X_LEDS - 1 - (x)) & 0xF8] ^= _BV((x & 0x07))
-  #define SET_PIXEL_7219(x, y)    LEDs[y + (MAX7219_X_LEDS - 1 - (x)) & 0xF8] |= _BV((x & 0x07)) 
+  #define SET_PIXEL_7219(x, y)    LEDs[y + (MAX7219_X_LEDS - 1 - (x)) & 0xF8] |= _BV((x & 0x07))
   #define CLEAR_PIXEL_7219(x, y)  LEDs[y + (MAX7219_X_LEDS - 1 - (x)) & 0xF8] &= (_BV((x & 0x07)) ^ 0xFF)
   #define BIT_7219(x, y)          TEST(LEDs[y + (MAX7219_X_LEDS - 1 - (x)) & 0xF8], ((x & 0x07)))
   #define SEND_7219(R) do {for(int8_t jj = 0; jj < MAX7219_NUMBER_UNITS; jj++) Max7219(max7219_reg_digit7 - (R & 0x7), LEDs[(R & 0x7) + jj * 8]); Max7219_pulse_load(); } while (0);

Marlin/src/feature/bedlevel/ubl/ubl_G29.cpp

             incremental_LSF(&lsf_results, PROBE_PT_3_X, PROBE_PT_3_Y, measured_z);
           }
         }
-        
+
         STOW_PROBE();
         #ifdef Z_AFTER_PROBING
           move_z_after_probing();
         #endif
-        
+
         if (abort_flag) {
           SERIAL_ECHOPGM("?Error probing point.  Aborting operation.\n");
           return;
       #ifdef Z_AFTER_PROBING
         move_z_after_probing();
       #endif
-      
+
       if (abort_flag || finish_incremental_LSF(&lsf_results)) {
         SERIAL_ECHOPGM("Could not complete LSF!");
         return;

Marlin/src/gcode/bedlevel/abl/G29.cpp

   #define G29_RETURN(b) return b;
 #else
   #define G29_RETURN(b) return;
-#endif 
+#endif
 
 /**
  * G29: Detailed Z probe, probes the bed at 3 or more points.
   #endif
 
   report_current_position();
-  
+
   G29_RETURN(isnan(measured_z));
 }
 

Marlin/src/gcode/feature/leds/M7219.cpp

 
 /**
  * M7219: Control the Max7219 LED matrix
- * 
+ *
  *  I         - Initialize (clear) the matrix
  *  F         - Fill the matrix (set all bits)
  *  P         - Dump the LEDs[] array values
  *  X<pos>    - X position of an LED to set or toggle
  *  Y<pos>    - Y position of an LED to set or toggle
  *  V<value>  - The potentially 32-bit value or on/off state to set
- *              (for example: a chain of 4 Max7219 devices can have 32 bit 
+ *              (for example: a chain of 4 Max7219 devices can have 32 bit
  *               rows or columns depending upon rotation)
  */
 void GcodeSuite::M7219() {

Marlin/src/gcode/gcode.cpp

   #ifndef G29_MAX_RETRIES
     #define G29_MAX_RETRIES 0
   #endif
-   
+
   void GcodeSuite::G29_with_retry() {
     uint8_t retries = G29_MAX_RETRIES;
     while (G29()) { // G29 should return true for failed probes ONLY
         #endif
         #ifdef G29_RECOVER_COMMANDS
           process_subcommands_now_P(PSTR(G29_RECOVER_COMMANDS));
-        #endif   
+        #endif
       }
       else {
         #ifdef G29_FAILURE_COMMANDS