1 files changed, 6 insertions, 10 deletions
diff --git a/chart2/source/inc/EventListenerHelper.hxx b/chart2/source/inc/EventListenerHelper.hxx
index c40fdc49c1e2..dcf3256d46b5 100644
--- a/chart2/source/inc/EventListenerHelper.hxx
+++ b/chart2/source/inc/EventListenerHelper.hxx
@@ -16,12 +16,11 @@
  *   except in compliance with the License. You may obtain a copy of
  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  */
-#ifndef INCLUDED_CHART2_SOURCE_INC_EVENTLISTENERHELPER_HXX
-#define INCLUDED_CHART2_SOURCE_INC_EVENTLISTENERHELPER_HXX
+#pragma once
 
 #include <com/sun/star/lang/XComponent.hpp>
 
-#include <algorithm>
+#include <utility>
 
 namespace com::sun::star::lang { class XEventListener; }
 
@@ -36,8 +35,8 @@ namespace impl
 template< class InterfaceRef >
 struct addListenerFunctor
 {
-    explicit addListenerFunctor( const css::uno::Reference< css::lang::XEventListener > & xListener ) :
-            m_xListener( xListener )
+    explicit addListenerFunctor( css::uno::Reference< css::lang::XEventListener > xListener ) :
+            m_xListener(std::move( xListener ))
     {}
 
     void operator() ( const InterfaceRef & xObject )
@@ -54,8 +53,8 @@ private:
 template< class InterfaceRef >
 struct removeListenerFunctor
 {
-    explicit removeListenerFunctor( const css::uno::Reference<  css::lang::XEventListener > & xListener ) :
-            m_xListener( xListener )
+    explicit removeListenerFunctor( css::uno::Reference<  css::lang::XEventListener > xListener ) :
+            m_xListener(std::move( xListener ))
     {}
 
     void operator() ( const InterfaceRef & xObject )
@@ -118,7 +117,4 @@ void removeListenerFromAllElements(
 } //  namespace EventListenerHelper
 } //  namespace chart
 
-// INCLUDED_CHART2_SOURCE_INC_EVENTLISTENERHELPER_HXX
-#endif
-
 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */