QScopedValueRollback: explicitly disable move semantics

For RAII objects, it's natural to have move semantics enabled these
days. So if a RAII type does _not_ offer it (and, as in this case,
cannot be made to offer it), be explicit and disable moves, too.

Change-Id: I5636a0c7ff2fc51982ce9a406f975b07d51af01a
Reviewed-by: Giuseppe D'Angelo <giuseppe.dangelo@kdab.com>

src/corelib/tools/qscopedvaluerollback.h

@@ -75,7 +75,7 @@ private:
     T &varRef;
     T oldValue;
 
-    Q_DISABLE_COPY(QScopedValueRollback)
+    Q_DISABLE_COPY_MOVE(QScopedValueRollback)
 };
 
 QT_END_NAMESPACE