loplugin:useuniqueptr in OZipFileAccess

Change-Id: Iaad8b364b1a244bd559e582a1622dd59b4756759
Reviewed-on: https://gerrit.libreoffice.org/53226Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>

package/inc/zipfileaccess.hxx

@@ -47,7 +47,7 @@ class OZipFileAccess : public ::cppu::WeakImplHelper<
     css::uno::Reference< css::uno::XComponentContext > m_xContext;
     css::uno::Reference< css::io::XInputStream > m_xContentStream;
     std::unique_ptr<ZipFile> m_pZipFile;
-    ::comphelper::OInterfaceContainerHelper2* m_pListenersContainer;
+    std::unique_ptr<::comphelper::OInterfaceContainerHelper2> m_pListenersContainer;
     bool m_bDisposed;
     bool m_bOwnContent;
 

package/source/zippackage/zipfileaccess.cxx

@@ -413,8 +413,7 @@ void SAL_CALL OZipFileAccess::dispose()
     {
            lang::EventObject aSource( static_cast< ::cppu::OWeakObject* >(this) );
         m_pListenersContainer->disposeAndClear( aSource );
-        delete m_pListenersContainer;
-        m_pListenersContainer = nullptr;
+        m_pListenersContainer.reset();
     }
 
     m_pZipFile.reset();
@@ -436,7 +435,7 @@ void SAL_CALL OZipFileAccess::addEventListener( const uno::Reference< lang::XEve
         throw lang::DisposedException(THROW_WHERE );
 
     if ( !m_pListenersContainer )
-        m_pListenersContainer = new ::comphelper::OInterfaceContainerHelper2( m_aMutexHolder->GetMutex() );
+        m_pListenersContainer.reset( new ::comphelper::OInterfaceContainerHelper2( m_aMutexHolder->GetMutex() ) );
     m_pListenersContainer->addInterface( xListener );
 }