loplugin:passstuffbyref improved return in various

Change-Id: I0a8282d8e0d9575b055243073fc89a7d6b67b560
Reviewed-on: https://gerrit.libreoffice.org/47173
Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>

5 files changed, 9 insertions, 9 deletions

diff --git a/oox/inc/drawingml/chart/converterbase.hxx b/oox/inc/drawingml/chart/converterbase.hxx
index 42f763b86405..11e14ebaf596 100644
--- a/oox/inc/drawingml/chart/converterbase.hxx
+++ b/oox/inc/drawingml/chart/converterbase.hxx
@@ -67,7 +67,7 @@ public:
     /** Creates an instance for the passed service name, using the process service factory. */
     css::uno::Reference< css::uno::XInterface >
                         createInstance( const OUString& rServiceName ) const;
-    css::uno::Reference< css::uno::XComponentContext >
+    css::uno::Reference< css::uno::XComponentContext > const &
                         getComponentContext() const;
 
 protected:
@@ -76,7 +76,7 @@ protected:
     /** Returns the chart converter. */
     ChartConverter&     getChartConverter() const;
     /** Returns the API chart document model. */
-    css::uno::Reference< css::chart2::XChartDocument >
+    css::uno::Reference< css::chart2::XChartDocument > const &
                         getChartDocument() const;
     /** Returns the position and size of the chart shape in 1/100 mm. */
     const css::awt::Size& getChartSize() const;
diff --git a/oox/source/core/filterbase.cxx b/oox/source/core/filterbase.cxx
index 2808134857d0..aee15b3995a8 100644
--- a/oox/source/core/filterbase.cxx
+++ b/oox/source/core/filterbase.cxx
@@ -329,7 +329,7 @@ OUString FilterBase::getAbsoluteUrl( const OUString& rUrl ) const
     return aUrl;
 }
 
-StorageRef FilterBase::getStorage() const
+StorageRef const & FilterBase::getStorage() const
 {
     return mxImpl->mxStorage;
 }
@@ -522,7 +522,7 @@ bool FilterBase::implFinalizeExport( MediaDescriptor& /*rMediaDescriptor*/ )
     return true;
 }
 
-Reference< XStream > FilterBase::getMainDocumentStream( ) const
+Reference< XStream > const & FilterBase::getMainDocumentStream( ) const
 {
     return mxImpl->mxOutStream;
 }
diff --git a/oox/source/drawingml/chart/converterbase.cxx b/oox/source/drawingml/chart/converterbase.cxx
index cf2bd687053c..35ed591936f5 100644
--- a/oox/source/drawingml/chart/converterbase.cxx
+++ b/oox/source/drawingml/chart/converterbase.cxx
@@ -229,7 +229,7 @@ Reference< XInterface > ConverterRoot::createInstance( const OUString& rServiceN
     return xInt;
 }
 
-Reference< XComponentContext > ConverterRoot::getComponentContext() const
+Reference< XComponentContext > const & ConverterRoot::getComponentContext() const
 {
     return mxData->mrFilter.getComponentContext();
 }
@@ -244,7 +244,7 @@ ChartConverter& ConverterRoot::getChartConverter() const
     return mxData->mrConverter;
 }
 
-Reference< XChartDocument > ConverterRoot::getChartDocument() const
+Reference< XChartDocument > const & ConverterRoot::getChartDocument() const
 {
     return mxData->mxDoc;
 }
diff --git a/oox/source/drawingml/diagram/layoutatomvisitors.hxx b/oox/source/drawingml/diagram/layoutatomvisitors.hxx
index 18effc18be92..299739186315 100644
--- a/oox/source/drawingml/diagram/layoutatomvisitors.hxx
+++ b/oox/source/drawingml/diagram/layoutatomvisitors.hxx
@@ -68,7 +68,7 @@ class ShapeTemplateVisitor : public LayoutAtomVisitor
 
 public:
     void defaultVisit(LayoutAtom const & rAtom);
-    ShapePtr getShapeCopy() const
+    ShapePtr const & getShapeCopy() const
         { return mpShape; }
 };
 
diff --git a/oox/source/export/vmlexport.cxx b/oox/source/export/vmlexport.cxx
index 498552b01c8a..0e3de4a20dda 100644
--- a/oox/source/export/vmlexport.cxx
+++ b/oox/source/export/vmlexport.cxx
@@ -1397,7 +1397,7 @@ void VMLExport::EndShape( sal_Int32 nShapeElement )
     }
 }
 
-OString VMLExport::AddSdrObject( const SdrObject& rObj, sal_Int16 eHOri, sal_Int16 eVOri, sal_Int16 eHRel, sal_Int16 eVRel, const bool bOOxmlExport )
+OString const & VMLExport::AddSdrObject( const SdrObject& rObj, sal_Int16 eHOri, sal_Int16 eVOri, sal_Int16 eHRel, sal_Int16 eVRel, const bool bOOxmlExport )
 {
     m_pSdrObject = &rObj;
     m_eHOri = eHOri;
@@ -1409,7 +1409,7 @@ OString VMLExport::AddSdrObject( const SdrObject& rObj, sal_Int16 eHOri, sal_Int
     return m_sShapeId;
 }
 
-OString VMLExport::AddInlineSdrObject( const SdrObject& rObj, const bool bOOxmlExport )
+OString const & VMLExport::AddInlineSdrObject( const SdrObject& rObj, const bool bOOxmlExport )
 {
     m_pSdrObject = &rObj;
     m_eHOri = -1;