piethernet threaded connect fix, small brush of PIIODevice

libs/main/io_devices/piiodevice.h

@@ -528,13 +528,15 @@ protected:
 	virtual void threadedReadBufferSizeChanged() {;}
 
 	static PIIODevice * newDeviceByPrefix(const char * prefix);
+	bool blockingReadFlag() const;
+	void setBlockingReadFlag(bool yes);
 
 	
 	DeviceMode mode_;
 	DeviceOptions options_;
-	ReadRetFunc func_read;
-	bool opened_;
-	void * ret_data_;
+	ReadRetFunc func_read = nullptr;
+	bool opened_ = false;
+	void * ret_data_ = nullptr;
 
 private:
 	EVENT_HANDLER(void, read_func);
@@ -550,11 +552,10 @@ private:
 	PIThread read_thread, write_thread;
 	PIByteArray buffer_in, buffer_tr;
 	PIQueue<PIPair<PIByteArray, ullong> > write_queue;
-	ullong tri;
-	ssize_t readed_;
+	ullong tri = 0;
 	uint threaded_read_buffer_size, reopen_timeout = 1000;
 	std::atomic_bool reading_now;
-	bool thread_started_, raise_threaded_read_, reopen_enabled = true;
+	bool reopen_enabled = true;
 
 	static PIMutex nfp_mutex;
 	static PIMap<PIString, PIString> nfp_cache;