fixes LOCK macro when disabled

Author: SuGlider

cores/esp32/HardwareSerial.cpp

@@ -119,6 +119,9 @@ void serialEventRun(void)
 #if !CONFIG_DISABLE_HAL_LOCKS
 #define HSERIAL_MUTEX_LOCK()    do {} while (xSemaphoreTake(_lock, portMAX_DELAY) != pdPASS)
 #define HSERIAL_MUTEX_UNLOCK()  xSemaphoreGive(_lock)
+#else
+#define HSERIAL_MUTEX_LOCK()    
+#define HSERIAL_MUTEX_UNLOCK()  
 #endif
 
 HardwareSerial::HardwareSerial(int uart_nr) : 

cores/esp32/esp32-hal-uart.c

@@ -90,10 +90,7 @@ void uartGetEventQueue(uart_t* uart, QueueHandle_t *q)
     if(uart == NULL) {
         return;
     }
-    // MUTEX will lock for the case that another task is executing begin() on the same UART and has not finished
-    //UART_MUTEX_LOCK();
     *q = uart->uart_event_queue;
-    //UART_MUTEX_UNLOCK();
     return;
 }