fix strange memory leak in VclBuilder

Change-Id: Iba34c25b19a94a8d4c147f8ccaef95f34183414b

include/vcl/builder.hxx

@@ -304,7 +304,7 @@ private:
     bool        m_bToplevelHasDeferredInit;
     bool        m_bToplevelHasDeferredProperties;
     bool        m_bToplevelParentFound;
-    ParserState *m_pParserState;
+    std::unique_ptr<ParserState> m_pParserState;
 
     vcl::Window *get_by_name(const OString& sID);
     void        delete_by_name(const OString& sID);

vcl/source/window/builder.cxx

@@ -484,7 +484,7 @@ VclBuilder::VclBuilder(vcl::Window *pParent, const OUString& sUIDir, const OUStr
     }
 
     //drop maps, etc. that we don't need again
-    delete m_pParserState;
+    m_pParserState.reset();
 
     SAL_WARN_IF(!m_sID.isEmpty() && (!m_bToplevelParentFound && !get_by_name(m_sID)), "vcl.layout",
         "Requested top level widget \"" << m_sID.getStr() <<