enhance useuniqueptr loplugin

teach it to look for the following sequence in a destructor:
delete m_pfoo;
m_pfoo = nullptr;

Change-Id: Icd6271a63a024e32b53cc9e599f8f59952160380
Reviewed-on: https://gerrit.libreoffice.org/37900
Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>

4 files changed, 7 insertions, 14 deletions

diff --git a/svtools/inc/vclxaccessibleheaderbaritem.hxx b/svtools/inc/vclxaccessibleheaderbaritem.hxx
index 5bdb0ac7de46..e3732f11e3c0 100644
--- a/svtools/inc/vclxaccessibleheaderbaritem.hxx
+++ b/svtools/inc/vclxaccessibleheaderbaritem.hxx
@@ -51,7 +51,6 @@ class VCLXAccessibleHeaderBarItem :    public comphelper::OAccessibleExtendedCom
                         public VCLXAccessibleHeaderBarItem_BASE
 {
 private:
-    VCLExternalSolarLock*    m_pExternalLock;
     VclPtr<HeaderBar>        m_pHeadBar;
     sal_Int32                m_nIndexInParent;
 
diff --git a/svtools/source/contnr/imivctl.hxx b/svtools/source/contnr/imivctl.hxx
index 7faf1a707fcd..fc3ccafceaa1 100644
--- a/svtools/source/contnr/imivctl.hxx
+++ b/svtools/source/contnr/imivctl.hxx
@@ -536,7 +536,7 @@ class IcnGridMap_Impl
 {
     tools::Rectangle               _aLastOccupiedGrid;
     SvxIconChoiceCtrl_Impl* _pView;
-    bool    *               _pGridMap;
+    std::unique_ptr<bool[]> _pGridMap;
     sal_uInt16              _nGridCols, _nGridRows;
 
     void                Expand();
diff --git a/svtools/source/contnr/imivctl2.cxx b/svtools/source/contnr/imivctl2.cxx
index 8fc65811fe35..ae2532edd7dd 100644
--- a/svtools/source/contnr/imivctl2.cxx
+++ b/svtools/source/contnr/imivctl2.cxx
@@ -483,8 +483,6 @@ IcnGridMap_Impl::IcnGridMap_Impl(SvxIconChoiceCtrl_Impl* pView)
 
 IcnGridMap_Impl::~IcnGridMap_Impl()
 {
-    delete[] _pGridMap;
-    _pGridMap = nullptr;
 }
 
 void IcnGridMap_Impl::Expand()
@@ -503,10 +501,9 @@ void IcnGridMap_Impl::Expand()
         size_t nNewCellCount = static_cast<size_t>(nNewGridRows) * nNewGridCols;
         bool* pNewGridMap = new bool[nNewCellCount];
         size_t nOldCellCount = static_cast<size_t>(_nGridRows) * _nGridCols;
-        memcpy(pNewGridMap, _pGridMap, nOldCellCount * sizeof(bool));
+        memcpy(pNewGridMap, _pGridMap.get(), nOldCellCount * sizeof(bool));
         memset(pNewGridMap + nOldCellCount, 0, (nNewCellCount-nOldCellCount) * sizeof(bool));
-        delete[] _pGridMap;
-        _pGridMap = pNewGridMap;
+        _pGridMap.reset( pNewGridMap );
         _nGridRows = nNewGridRows;
         _nGridCols = nNewGridCols;
     }
@@ -524,8 +521,8 @@ void IcnGridMap_Impl::Create_Impl()
         _nGridCols += 50;
 
     size_t nCellCount = static_cast<size_t>(_nGridRows) * _nGridCols;
-    _pGridMap = new bool[nCellCount];
-    memset(_pGridMap, 0, nCellCount * sizeof(bool));
+    _pGridMap.reset( new bool[nCellCount] );
+    memset(_pGridMap.get(), 0, nCellCount * sizeof(bool));
 
     const size_t nCount = _pView->aEntries.size();
     for( size_t nCur=0; nCur < nCount; nCur++ )
@@ -659,8 +656,7 @@ void IcnGridMap_Impl::Clear()
 {
     if( _pGridMap )
     {
-        delete[] _pGridMap;
-        _pGridMap = nullptr;
+        _pGridMap.reset();
         _nGridRows = 0;
         _nGridCols = 0;
         _aLastOccupiedGrid.SetEmpty();
diff --git a/svtools/source/control/vclxaccessibleheaderbaritem.cxx b/svtools/source/control/vclxaccessibleheaderbaritem.cxx
index 2cba759d59a9..fe839a073c3f 100644
--- a/svtools/source/control/vclxaccessibleheaderbaritem.cxx
+++ b/svtools/source/control/vclxaccessibleheaderbaritem.cxx
@@ -52,13 +52,11 @@ VCLXAccessibleHeaderBarItem::VCLXAccessibleHeaderBarItem( HeaderBar*    pHeadBar
     ,m_nIndexInParent(_nIndexInParent + 1)
 
 {
-    m_pExternalLock = static_cast< VCLExternalSolarLock* >( getExternalLock() );
 }
 
 VCLXAccessibleHeaderBarItem::~VCLXAccessibleHeaderBarItem()
 {
-    delete m_pExternalLock;
-    m_pExternalLock = nullptr;
+    delete static_cast< VCLExternalSolarLock* >( getExternalLock() );
 }
 
 void VCLXAccessibleHeaderBarItem::FillAccessibleStateSet( utl::AccessibleStateSetHelper& rStateSet )