loplugin:useuniqueptr in XFFrameStyle

Change-Id: I812c9fc7ab297e962994265e69feb80f82adc49a
Reviewed-on: https://gerrit.libreoffice.org/50752Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>

lotuswordpro/inc/xfilter/xfframestyle.hxx

@@ -66,6 +66,7 @@
 #include <xfilter/xfmargins.hxx>
 #include <xfilter/xfcolor.hxx>
 #include <xfilter/xfpadding.hxx>
+#include <memory>
 
 class XFBorders;
 class XFColumns;
@@ -151,10 +152,10 @@ protected:
     enumXFWrap  m_eWrap;
     XFPadding   m_aPad;
     XFMargins   m_aMargins;
-    XFBorders   *m_pBorders;
-    XFColumns   *m_pColumns;
-    XFShadow    *m_pShadow;
-    XFBGImage   *m_pBGImage;
+    std::unique_ptr<XFBorders> m_pBorders;
+    std::unique_ptr<XFColumns> m_pColumns;
+    std::unique_ptr<XFShadow>  m_pShadow;
+    std::unique_ptr<XFBGImage> m_pBGImage;
     XFColor     m_aBackColor;
     bool        m_bProtectContent;
     bool        m_bProtectSize;

lotuswordpro/source/filter/xfilter/xfframestyle.cxx

@@ -65,10 +65,6 @@
 
 XFFrameStyle::XFFrameStyle()
     : m_eWrap(enumXFWrapNone)
-    , m_pBorders(nullptr)
-    , m_pColumns(nullptr)
-    , m_pShadow(nullptr)
-    , m_pBGImage(nullptr)
     , m_bProtectContent(false)
     , m_bProtectSize(false)
     , m_bProtectPos(false)
@@ -82,34 +78,26 @@ XFFrameStyle::XFFrameStyle()
 
 XFFrameStyle::~XFFrameStyle()
 {
-    delete m_pBorders;
-    delete m_pColumns;
-    delete m_pShadow;
-    delete m_pBGImage;
 }
 
 void    XFFrameStyle::SetBorders(XFBorders *pBorders)
 {
-    delete m_pBorders;
-    m_pBorders = pBorders;
+    m_pBorders.reset(pBorders);
 }
 
 void    XFFrameStyle::SetColumns(XFColumns *pColumns)
 {
-    delete m_pColumns;
-    m_pColumns = pColumns;
+    m_pColumns.reset(pColumns);
 }
 
 void    XFFrameStyle::SetShadow(XFShadow *pShadow)
 {
-    delete m_pShadow;
-    m_pShadow = pShadow;
+    m_pShadow.reset(pShadow);
 }
 
 void    XFFrameStyle::SetBackImage(XFBGImage *image)
 {
-    delete m_pBGImage;
-    m_pBGImage = image;
+    m_pBGImage.reset(image);
 }
 
 enumXFStyle XFFrameStyle::GetStyleFamily()