Apply TERN to compact code (#17619)

Marlin/src/HAL/LPC1768/DebugMonitor.cpp

@@ -211,11 +211,7 @@ void HardFault_HandlerC(unsigned long *sp, unsigned long lr, unsigned long cause
 
   // Nothing below here is compiled because NVIC_SystemReset loops forever
 
-  for (;;) {
-    #if ENABLED(USE_WATCHDOG)
-      watchdog_init();
-    #endif
-  }
+  for (;;) { TERN_(USE_WATCHDOG, watchdog_init()); }
 }
 
 extern "C" {

Marlin/src/HAL/LPC1768/HAL.cpp

@@ -70,9 +70,7 @@ int16_t PARSED_PIN_INDEX(const char code, const int16_t dval) {
 void flashFirmware(const int16_t) { NVIC_SystemReset(); }
 
 void HAL_clear_reset_source(void) {
-  #if ENABLED(USE_WATCHDOG)
-    watchdog_clear_timeout_flag();
-  #endif
+  TERN_(USE_WATCHDOG, watchdog_clear_timeout_flag());
 }
 
 uint8_t HAL_get_reset_source(void) {

Marlin/src/HAL/LPC1768/MarlinSerial.h

@@ -44,10 +44,9 @@ public:
   MarlinSerial(LPC_UART_TypeDef *UARTx) :
     HardwareSerial<RX_BUFFER_SIZE, TX_BUFFER_SIZE>(UARTx)
     #if ENABLED(EMERGENCY_PARSER)
-       , emergency_state(EmergencyParser::State::EP_RESET)
+      , emergency_state(EmergencyParser::State::EP_RESET)
     #endif
-    {
-    }
+    { }
 
   void end() {}
 

Marlin/src/HAL/LPC1768/Servo.h

@@ -60,9 +60,7 @@ class libServo: public Servo {
     if (attach(servo_info[servoIndex].Pin.nbr) >= 0) {    // try to reattach
       write(value);
       safe_delay(servo_delay[servoIndex]); // delay to allow servo to reach position
-      #if ENABLED(DEACTIVATE_SERVOS_AFTER_MOVE)
-        detach();
-      #endif
+      TERN_(DEACTIVATE_SERVOS_AFTER_MOVE, detach());
     }
 
   }