Setting value of _bearSslClient pointer to NULL after delete - good practice to prevent random memory access due to a dangling pointer

Author: aentinger

src/ArduinoIoTCloud.cpp

@@ -19,6 +19,7 @@ ArduinoIoTCloudClass::~ArduinoIoTCloudClass()
 {
   if (_bearSslClient) {
     delete _bearSslClient;
+    _bearSslClient = NULL;
   }
 }