loplugin:useuniqueptr in helpdatafileproxy::Hdf

Change-Id: I4324a290b826d76f89319f556aededb30d921f8d
Reviewed-on: https://gerrit.libreoffice.org/54166Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>

xmlhelp/source/cxxhelp/provider/db.cxx

@@ -68,13 +68,13 @@ void Hdf::createHashMap( bool bOptimizeForPerformance )
     {
         if( m_pStringToDataMap != nullptr )
             return;
-        m_pStringToDataMap = new StringToDataMap;
+        m_pStringToDataMap.reset(new StringToDataMap);
     }
     else
     {
         if( m_pStringToValPosMap != nullptr )
             return;
-        m_pStringToValPosMap = new StringToValPosMap;
+        m_pStringToValPosMap.reset(new StringToValPosMap);
     }
 
     Reference< XInputStream > xIn = m_xSFA->openFileRead( m_aFileURL );
@@ -123,19 +123,15 @@ void Hdf::createHashMap( bool bOptimizeForPerformance )
 
 void Hdf::releaseHashMap()
 {
-    if( m_pStringToDataMap != nullptr )
-    {
-        delete m_pStringToDataMap;
-        m_pStringToDataMap = nullptr;
-    }
-    if( m_pStringToValPosMap != nullptr )
-    {
-        delete m_pStringToValPosMap;
-        m_pStringToValPosMap = nullptr;
-    }
+    m_pStringToDataMap.reset();
+    m_pStringToValPosMap.reset();
 }
 
 
+Hdf::~Hdf()
+{
+}
+
 bool Hdf::getValueForKey( const OString& rKey, HDFData& rValue )
 {
     bool bSuccess = false;

xmlhelp/source/cxxhelp/provider/db.hxx

@@ -52,8 +52,8 @@ namespace helpdatafileproxy {
     class Hdf
     {
         OUString       m_aFileURL;
-        StringToDataMap*    m_pStringToDataMap;
-        StringToValPosMap*  m_pStringToValPosMap;
+        std::unique_ptr<StringToDataMap>   m_pStringToDataMap;
+        std::unique_ptr<StringToValPosMap> m_pStringToValPosMap;
         css::uno::Reference< css::ucb::XSimpleFileAccess3 >
                             m_xSFA;
 
@@ -81,8 +81,7 @@ namespace helpdatafileproxy {
         {
             OSL_ASSERT(comphelper::isFileUrl(rFileURL));
         }
-        ~Hdf()
-            { releaseHashMap(); }
+        ~Hdf();
 
         void createHashMap( bool bOptimizeForPerformance );
         void releaseHashMap();