loplugin:useuniqueptr in XFIndex

but actually this object should be held by rtl::Reference

Change-Id: Iabf068bd909201af5df6f987c6dcdb64679fefbd
Reviewed-on: https://gerrit.libreoffice.org/60970
Tested-by: Jenkins
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>

lotuswordpro/inc/xfilter/xfindex.hxx

@@ -65,6 +65,7 @@
 #include <xfilter/xfcontent.hxx>
 #include <xfilter/xfcontentcontainer.hxx>
 #include <xfilter/xftabstop.hxx>
+#include <rtl/ref.hxx>
 
 class XFIndex;
 class XFIndexTemplate;
@@ -168,7 +169,7 @@ private:
     bool            m_bProtect;
     bool            m_bSeparator;
 
-    std::vector<XFIndexTemplate *>  m_aTemplates; // template entry + style
+    std::vector<rtl::Reference<XFIndexTemplate>>  m_aTemplates; // template entry + style
 
     #define MAX_TOC_LEVEL 10
     std::vector<OUString> m_aTOCSource[MAX_TOC_LEVEL+1];

lotuswordpro/source/filter/xfilter/xfindex.cxx

@@ -68,12 +68,6 @@ XFIndex::XFIndex()
 
 XFIndex::~XFIndex()
 {
-    while(m_aTemplates.size()>0)
-    {
-        XFIndexTemplate * pTemplate = m_aTemplates.back();
-        m_aTemplates.pop_back();
-        delete pTemplate;
-    }
 }
 
 void    XFIndex::AddTemplate(const OUString& level, const OUString& style, XFIndexTemplate* templ)