Update LoRaMac-node to Version 4.4.4，fix Security breach found by Tencent Blade Team please refer to security advisory - CVE-2020-11068

fix Security breach found by Tencent Blade Team please refer to security advisory - CVE-2020-11068

components/connectivity/LoraWAN/system/adc.h

@@ -23,6 +23,11 @@
 #ifndef __ADC_H__
 #define __ADC_H__
 
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
 #include <stdint.h>
 #include "gpio.h"
 
@@ -58,4 +63,8 @@ void AdcDeInit( Adc_t *obj );
  */
 uint16_t AdcReadChannel( Adc_t *obj, uint32_t channel );
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif // __ADC_H__