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/i2c.h

@@ -23,6 +23,11 @@
 #ifndef __I2C_H__
 #define __I2C_H__
 
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
 #include "gpio.h"
 
 /*!
@@ -109,4 +114,8 @@ uint8_t I2cRead( I2c_t *obj, uint8_t deviceAddr, uint16_t addr, uint8_t *data );
  */
 uint8_t I2cReadBuffer( I2c_t *obj, uint8_t deviceAddr, uint16_t addr, uint8_t *buffer, uint16_t size );
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif // __I2C_H__