use boost::scoped_ptr instead of raw pointers

Change-Id: Ie09c66a414ec5a949bf8b0e5a32a3bd0d603bd06

sc/source/filter/excel/xestyle.cxx

@@ -3002,12 +3002,6 @@ XclExpDxf::XclExpDxf( const XclExpRoot& rRoot, XclExpCellAlign* pAlign, XclExpCe
 
 XclExpDxf::~XclExpDxf()
 {
-    delete mpAlign;
-    delete mpBorder;
-    delete mpFont;
-    delete mpNumberFmt;
-    delete mpProt;
-    delete mpColor;
 }
 
 void XclExpDxf::SaveXml( XclExpXmlStream& rStrm )

sc/source/filter/inc/xestyle.hxx

@@ -748,12 +748,12 @@ public:
     virtual void SaveXml( XclExpXmlStream& rStrm );
 
 private:
-    XclExpCellAlign* mpAlign;
-    XclExpCellBorder* mpBorder;
-    XclExpFont* mpFont;
-    XclExpNumFmt* mpNumberFmt;
-    XclExpCellProt* mpProt;
-    XclExpColor* mpColor;
+    boost::scoped_ptr<XclExpCellAlign> mpAlign;
+    boost::scoped_ptr<XclExpCellBorder> mpBorder;
+    boost::scoped_ptr<XclExpFont> mpFont;
+    boost::scoped_ptr<XclExpNumFmt> mpNumberFmt;
+    boost::scoped_ptr<XclExpCellProt> mpProt;
+    boost::scoped_ptr<XclExpColor> mpColor;
 };
 
 class XclExpDxfs : public XclExpRecordBase, protected XclExpRoot