convert sc/.../reffact.hxx from String to OUString

and de-virtual GetRefString/SetRefString, not being overriden
or overriding.

Change-Id: I7bf358ed5cdff316f6c77bdc13e9e245c5acccb9

sc/source/ui/inc/reffact.hxx

@@ -119,8 +119,8 @@ class ScSimpleRefDlgWrapper: public SfxChildWindow
         SFX_DECL_CHILDWINDOW_WITHID(Class);
 
         static void     SetDefaultPosSize(Point aPos, Size aSize, sal_Bool bSet=sal_True);
-        virtual String  GetRefString();
-        virtual void    SetRefString(const String& rStr);
+        OUString        GetRefString();
+        void            SetRefString(const OUString& rStr);
         void            SetCloseHdl( const Link& rLink );
         void            SetUnoLinks( const Link& rDone, const Link& rAbort,
                                         const Link& rChange );

sc/source/ui/view/reffact.cxx

@@ -185,9 +185,9 @@ void ScSimpleRefDlgWrapper::SetDefaultPosSize(Point aPos, Size aSize, sal_Bool b
 }
 
 
-String ScSimpleRefDlgWrapper::GetRefString()
+OUString ScSimpleRefDlgWrapper::GetRefString()
 {
-    String aResult;
+    OUString aResult;
     if(pWindow!=NULL)
     {
         aResult=((ScSimpleRefDlg*)pWindow)->GetRefString();
@@ -200,7 +200,7 @@ void ScSimpleRefDlgWrapper::SetAutoReOpen(sal_Bool bFlag)
     bAutoReOpen=bFlag;
 }
 
-void ScSimpleRefDlgWrapper::SetRefString(const String& rStr)
+void ScSimpleRefDlgWrapper::SetRefString(const OUString& rStr)
 {
     if(pWindow!=NULL)
     {