DocxAttributeOutput: ClearGraphicCache() -> ClearRelIdCache()

Because rel ids are used not only for graphics.

Change-Id: I9d0fd7196a1b8e0494d850197cb50fc8098eff82

sw/source/filter/ww8/docxattributeoutput.cxx

@@ -3567,7 +3567,7 @@ void DocxAttributeOutput::WriteSrcRect(const SdrObject* pSdrObj )
     }
 }
 
-void DocxAttributeOutput::ClearGraphicCache()
+void DocxAttributeOutput::ClearRelIdCache()
 {
     m_aRelIdCache.clear();
 }

sw/source/filter/ww8/docxattributeoutput.hxx

@@ -358,7 +358,7 @@ public:
 
     void WriteBookmarks_Impl( std::vector< OUString >& rStarts, std::vector< OUString >& rEnds );
     void WriteAnnotationMarks_Impl( std::vector< OUString >& rStarts, std::vector< OUString >& rEnds );
-    void ClearGraphicCache();
+    void ClearRelIdCache();
 
 private:
     /// Initialize the structures where we are going to collect some of the paragraph properties.

sw/source/filter/ww8/docxexport.cxx

@@ -713,7 +713,7 @@ void DocxExport::WriteHeaderFooter( const SwFmt& rFmt, bool bHeader, const char*
 
     //When the stream changes the cache which is maintained for the graphics in case of alternate content is not cleared.
     //So clearing the alternate content graphic cache.
-    m_pAttrOutput->ClearGraphicCache();
+    m_pAttrOutput->ClearRelIdCache();
 
     // switch the serializer back
     m_pAttrOutput->SetSerializer( m_pDocumentFS );