Revert "these are equal to the defaults"

This reverts commit 9e09827b.

Revert "coverity#1371302 Missing move assignment operator"

This reverts commit e214fab7.

include/vcl/alpha.hxx

@@ -33,13 +33,12 @@ public:
 
                 AlphaMask();
                 AlphaMask( const Bitmap& rBitmap );
-                AlphaMask( const AlphaMask& rAlphaMask ) = default;
-                AlphaMask( AlphaMask&& rAlphaMask ) = default;
+                AlphaMask( const AlphaMask& rAlphaMask );
                 AlphaMask( const Size& rSizePixel, sal_uInt8* pEraseTransparency = nullptr );
+    virtual     ~AlphaMask() override;
 
     AlphaMask&  operator=( const Bitmap& rBitmap );
-    AlphaMask&  operator=( const AlphaMask& rAlphaMask ) = default;
-    AlphaMask&  operator=( AlphaMask&& rAlphaMask ) = default;
+    AlphaMask&  operator=( const AlphaMask& rAlphaMask ) { return static_cast<AlphaMask&>( Bitmap::operator=( rAlphaMask ) ); }
     bool        operator!() const { return Bitmap::operator!(); }
     bool        operator==( const AlphaMask& rAlphaMask ) const { return Bitmap::operator==( rAlphaMask ); }
     bool        operator!=( const AlphaMask& rAlphaMask ) const { return Bitmap::operator!=( rAlphaMask ); }

vcl/source/gdi/alpha.cxx

@@ -33,6 +33,11 @@ AlphaMask::AlphaMask( const Bitmap& rBitmap ) :
         Bitmap::Convert( BMP_CONVERSION_8BIT_GREYS );
 }
 
+AlphaMask::AlphaMask( const AlphaMask& rAlphaMask ) :
+    Bitmap( rAlphaMask )
+{
+}
+
 AlphaMask::AlphaMask( const Size& rSizePixel, sal_uInt8* pEraseTransparency ) :
     Bitmap( rSizePixel, 8, &Bitmap::GetGreyPalette( 256 ) )
 {
@@ -40,6 +45,10 @@ AlphaMask::AlphaMask( const Size& rSizePixel, sal_uInt8* pEraseTransparency ) :
         Bitmap::Erase( Color( *pEraseTransparency, *pEraseTransparency, *pEraseTransparency ) );
 }
 
+AlphaMask::~AlphaMask()
+{
+}
+
 AlphaMask& AlphaMask::operator=( const Bitmap& rBitmap )
 {
     *static_cast<Bitmap*>(this) = rBitmap;