use std::unique_ptr for Impl in SvxStyleToolBoxControl

Change-Id: Ia01755ee617002ef2c234e29b1edd497b031ef8a

include/svx/tbcontrl.hxx

@@ -155,6 +155,8 @@ namespace svx
 class SVX_DLLPUBLIC SvxStyleToolBoxControl : public SfxToolBoxControl
 {
     struct Impl;
+    std::unique_ptr<Impl> pImpl;
+
 public:
     SFX_DECL_TOOLBOX_CONTROL();
 
@@ -189,7 +191,6 @@ private:
     css::uno::Reference<css::lang::XComponent> m_xBoundItems[MAX_FAMILIES];
     SfxTemplateItem* pFamilyState[MAX_FAMILIES];
     sal_uInt16 nActFamily; // Id in the ToolBox = Position - 1
-    Impl* pImpl;
 
     SVX_DLLPRIVATE void Update();
     SVX_DLLPRIVATE void FillStyleBox();

svx/source/tbxctrls/tbcontrl.cxx

@@ -1987,9 +1987,9 @@ static const char* StyleSlotToStyleCommand[MAX_FAMILIES] =
 SvxStyleToolBoxControl::SvxStyleToolBoxControl(
     sal_uInt16 nSlotId, sal_uInt16 nId, ToolBox& rTbx )
     :   SfxToolBoxControl   ( nSlotId, nId, rTbx ),
+        pImpl               ( new Impl ),
         pStyleSheetPool     ( NULL ),
-        nActFamily          ( 0xffff ),
-        pImpl               ( new Impl )
+        nActFamily          ( 0xffff )
 {
     for ( sal_uInt16 i=0; i<MAX_FAMILIES; i++ )
     {
@@ -2001,7 +2001,6 @@ SvxStyleToolBoxControl::SvxStyleToolBoxControl(
 
 SvxStyleToolBoxControl::~SvxStyleToolBoxControl()
 {
-    delete pImpl;
 }
 
 void SAL_CALL SvxStyleToolBoxControl::initialize( const Sequence< Any >& aArguments )
@@ -2051,7 +2050,7 @@ throw (::com::sun::star::uno::RuntimeException, std::exception)
         DELETEZ( pFamilyState[i] );
     }
     pStyleSheetPool = NULL;
-    DELETEZ( pImpl );
+    pImpl.reset();
 }
 
 void SAL_CALL SvxStyleToolBoxControl::update() throw (RuntimeException, std::exception)