De-inline dtors of QTextureFileHandler hierarchy

Destructors of polymorphic classes should be out-of-line to pin vtable
and type_info objects to a single TU.

Pick-to: 6.3
Task-number: QTBUG-45582
Change-Id: I541437a3ff53852527f6278355f7b549e62e17f7
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>

src/gui/util/qastchandler.cpp

@@ -59,6 +59,8 @@ struct AstcHeader
     quint8 zSize[3];
 };
 
+QAstcHandler::~QAstcHandler() = default;
+
 bool QAstcHandler::canRead(const QByteArray &suffix, const QByteArray &block)
 {
     Q_UNUSED(suffix);

src/gui/util/qastchandler_p.h

@@ -59,6 +59,7 @@ class QAstcHandler : public QTextureFileHandler
 {
 public:
     using QTextureFileHandler::QTextureFileHandler;
+    ~QAstcHandler() override;
 
     static bool canRead(const QByteArray &suffix, const QByteArray &block);
 

src/gui/util/qktxhandler.cpp

@@ -111,6 +111,8 @@ constexpr quint32 withPadding(quint32 value, quint32 rounding)
     return value + (rounding - 1) - ((value + (rounding - 1)) % rounding);
 }
 
+QKtxHandler::~QKtxHandler() = default;
+
 bool QKtxHandler::canRead(const QByteArray &suffix, const QByteArray &block)
 {
     Q_UNUSED(suffix);

src/gui/util/qktxhandler_p.h

@@ -61,6 +61,7 @@ class QKtxHandler : public QTextureFileHandler
 {
 public:
     using QTextureFileHandler::QTextureFileHandler;
+    ~QKtxHandler() override;
 
     static bool canRead(const QByteArray &suffix, const QByteArray &block);
 

src/gui/util/qpkmhandler.cpp

@@ -65,6 +65,8 @@ static constexpr PkmType typeMap[5] = {
     { 0x9276,  8 }    // GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2
 };
 
+QPkmHandler::~QPkmHandler() = default;
+
 bool QPkmHandler::canRead(const QByteArray &suffix, const QByteArray &block)
 {
     Q_UNUSED(suffix);

src/gui/util/qpkmhandler_p.h

@@ -59,6 +59,7 @@ class QPkmHandler : public QTextureFileHandler
 {
 public:
     using QTextureFileHandler::QTextureFileHandler;
+    ~QPkmHandler() override;
 
     static bool canRead(const QByteArray &suffix, const QByteArray &block);
 

src/gui/util/qtexturefilehandler_p.h

@@ -63,7 +63,7 @@ public:
     {
         m_logName = !logName.isEmpty() ? logName : QByteArrayLiteral("(unknown)");
     }
-    virtual ~QTextureFileHandler() {}
+    virtual ~QTextureFileHandler();
 
     virtual QTextureFileData read() = 0;
     QIODevice *device() const { return m_device; }

src/gui/util/qtexturefilereader.cpp

@@ -47,6 +47,8 @@
 
 QT_BEGIN_NAMESPACE
 
+QTextureFileHandler::~QTextureFileHandler() = default;
+
 QTextureFileReader::QTextureFileReader(QIODevice *device, const QString &fileName)
     : m_device(device), m_fileName(fileName)
 {