Qt: Flesh out VFileDevice more, to avoid leak

src/platform/qt/VFileDevice.cpp

@@ -91,6 +91,10 @@ VFileDevice::VFileDevice(const QString& filename, QIODevice::OpenMode mode, QObj
 	}
 }
 
+VFileDevice::~VFileDevice() {
+	close();
+}
+
 void VFileDevice::close() {
 	if (!m_vf) {
 		return;
@@ -117,6 +121,13 @@ VFileDevice& VFileDevice::operator=(VFile* vf) {
 	return *this;
 }
 
+VFile* VFileDevice::take() {
+	VFile* vf = m_vf;
+	m_vf = nullptr;
+	QIODevice::close();
+	return vf;
+}
+
 qint64 VFileDevice::readData(char* data, qint64 maxSize) {
 	return m_vf->read(m_vf, data, maxSize);
 }

src/platform/qt/VFileDevice.h

@@ -20,6 +20,7 @@ Q_OBJECT
 public:
 	VFileDevice(VFile* vf = nullptr, QObject* parent = nullptr);
 	VFileDevice(const QString&, QIODevice::OpenMode, QObject* parent = nullptr);
+	virtual ~VFileDevice();
 
 	virtual void close() override;
 	virtual bool seek(qint64 pos) override;
@@ -29,6 +30,7 @@ public:
 
 	VFileDevice& operator=(VFile*);
 	operator VFile*() { return m_vf; }
+	VFile* take();
 
 	static VFile* wrap(QIODevice*, QIODevice::OpenMode);
 	static VFile* wrap(QFileDevice*, QIODevice::OpenMode);