usermod_v2_HttpPullLightControl: Fix build

usermods/usermod_v2_HttpPullLightControl/usermod_v2_HttpPullLightControl.cpp

@@ -297,10 +297,10 @@ void HttpPullLightControl::handleResponse(String& responseStr) {
     // Check for valid JSON, otherwise we brick the program runtime
     if (jsonStr[0] == '{' || jsonStr[0] == '[') {
       // Attempt to deserialize the JSON response
-      DeserializationError error = deserializeJson(doc, jsonStr);
+      DeserializationError error = deserializeJson(*pDoc, jsonStr);
       if (error == DeserializationError::Ok) {
         // Get JSON object from th doc
-        JsonObject obj = doc.as<JsonObject>();
+        JsonObject obj = pDoc->as<JsonObject>();
         // Parse the object throuhg deserializeState  (use CALL_MODE_NO_NOTIFY or OR CALL_MODE_DIRECT_CHANGE)
         deserializeState(obj, CALL_MODE_NO_NOTIFY);
       } else {