Clean up recent contribs

Marlin/src/HAL/HAL_LPC1768/watchdog.cpp

 
 void watchdog_reset() {
   WDT_Feed();
-  #if !defined(PINS_DEBUGGING) && PIN_EXISTS(LED)
+  #if DISABLED(PINS_DEBUGGING) && PIN_EXISTS(LED)
     TOGGLE(LED_PIN);  // heart beat indicator
   #endif
 }
 
 #else
+
   void HAL_clear_reset_source(void) {}
   uint8_t HAL_get_reset_source(void) { return RST_POWER_ON; }
+
 #endif // USE_WATCHDOG
 
 #endif // TARGET_LPC1768

Marlin/src/HAL/HAL_STM32/endstop_interrupts.h

   #endif
   #if HAS_Z3_MIN
     attachInterrupt(Z3_MIN_PIN, endstop_ISR, CHANGE);
-  #endif  
+  #endif
   #if HAS_Z_MIN_PROBE_PIN
     attachInterrupt(Z_MIN_PROBE_PIN, endstop_ISR, CHANGE);
   #endif
 }
-

Marlin/src/HAL/HAL_STM32/watchdog_STM32.cpp

 
   void watchdog_init() { IWatchdog.begin(4000000); } // 4 sec timeout
 
-  void watchdog_reset() 
-  {
-    IWatchdog.reload(); 
-
+  void watchdog_reset() {
+    IWatchdog.reload();
     #if PIN_EXISTS(LED)
-      TOGGLE(LED_PIN);  // heart beat indicator
+      TOGGLE(LED_PIN);  // heartbeat indicator
     #endif
   }