tdf#89329: use unique_ptr for pImpl in configvaluecontainer

Change-Id: Ide38cacc59a44515287d51dadb23836eaac14518
Reviewed-on: https://gerrit.libreoffice.org/25904Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Noel Grandin <noelgrandin@gmail.com>

include/unotools/configvaluecontainer.hxx

@@ -23,6 +23,7 @@
 #include <com/sun/star/uno/XComponentContext.hpp>
 #include <osl/mutex.hxx>
 #include <o3tl/typed_flags_set.hxx>
+#include <memory>
 
 
 enum class CVCFlags
@@ -65,8 +66,7 @@ namespace utl
     class UNOTOOLS_DLLPUBLIC OConfigurationValueContainer
     {
     private:
-        OConfigurationValueContainerImpl*
-                    m_pImpl;
+        std::unique_ptr<OConfigurationValueContainerImpl> m_pImpl;
 
     protected:
 

unotools/source/config/configvaluecontainer.cxx

@@ -220,7 +220,6 @@ namespace utl
 
     OConfigurationValueContainer::~OConfigurationValueContainer()
     {
-        delete m_pImpl;
     }
 
     void OConfigurationValueContainer::implConstruct( const OUString& _rConfigLocation,