loplugin:useuniqueptr in XFHeaderStyle

Change-Id: Id1e29fde9d6dfcd3c816967272c80ace85d515cc
Reviewed-on: https://gerrit.libreoffice.org/50750Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>

lotuswordpro/inc/xfilter/xfheaderstyle.hxx

@@ -65,6 +65,7 @@
 #include <xfilter/xfborders.hxx>
 #include <xfilter/xfpadding.hxx>
 #include <xfilter/xfshadow.hxx>
+#include <memory>
 
 /**
  * @brief
@@ -124,10 +125,10 @@ protected:
     double      m_fHeight;
     double      m_fMinHeight;
     XFMargins   m_aMargin;
-    XFShadow*   m_pShadow;
+    std::unique_ptr<XFShadow>  m_pShadow;
     XFPadding   m_aPadding;
-    XFBorders   *m_pBorders;
-    XFBGImage   *m_pBGImage;
+    std::unique_ptr<XFBorders> m_pBorders;
+    std::unique_ptr<XFBGImage> m_pBGImage;
     XFColor     m_aBackColor;
 };
 

lotuswordpro/source/filter/xfilter/xfheaderstyle.cxx

@@ -66,16 +66,10 @@ XFHeaderStyle::XFHeaderStyle(bool isFooter)
     m_bDynamicSpace = true;
     m_fHeight = -1;
     m_fMinHeight = -1;
-    m_pBorders = nullptr;
-    m_pShadow = nullptr;
-    m_pBGImage = nullptr;
 }
 
 XFHeaderStyle::~XFHeaderStyle()
 {
-    delete m_pBorders;
-    delete m_pBGImage;
-    delete m_pShadow;
 }
 
 void    XFHeaderStyle::SetMargins(double left, double right, double bottom)
@@ -104,21 +98,19 @@ void    XFHeaderStyle::SetMinHeight(double minHeight)
 
 void    XFHeaderStyle::SetShadow(XFShadow *pShadow)
 {
-    if( m_pShadow && (pShadow != m_pShadow) )
-        delete m_pShadow;
-    m_pShadow = pShadow;
+    if( pShadow == m_pShadow.get() )
+        return;
+    m_pShadow.reset( pShadow );
 }
 
 void    XFHeaderStyle::SetBorders(XFBorders *pBorders)
 {
-    delete m_pBorders;
-    m_pBorders = pBorders;
+    m_pBorders.reset(pBorders);
 }
 
 void    XFHeaderStyle::SetBackImage(XFBGImage *image)
 {
-    delete m_pBGImage;
-    m_pBGImage = image;
+    m_pBGImage.reset( image );
 }
 
 void    XFHeaderStyle::SetBackColor(XFColor color)