loplugin:useuniqueptr in SchAlignmentTabPage

Change-Id: Ib457e6894d233fa4737bb4a6488b37c5455ee098
Reviewed-on: https://gerrit.libreoffice.org/55529Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>

chart2/source/controller/dialogs/tp_TitleRotation.cxx

@@ -41,7 +41,7 @@ SchAlignmentTabPage::SchAlignmentTabPage(vcl::Window* pWindow,
     get(m_pLbTextDirection,"textdirLB");
     get(m_pFtABCD,"labelABCD");
     m_pCtrlDial->SetText(m_pFtABCD->GetText());
-    m_pOrientHlp = new svx::OrientationHelper(*m_pCtrlDial, *m_pNfRotate, *m_pCbStacked);
+    m_pOrientHlp.reset( new svx::OrientationHelper(*m_pCtrlDial, *m_pNfRotate, *m_pCbStacked) );
 
     m_pCbStacked->EnableTriState( false );
     m_pOrientHlp->Enable();
@@ -60,8 +60,7 @@ SchAlignmentTabPage::~SchAlignmentTabPage()
 
 void SchAlignmentTabPage::dispose()
 {
-    delete m_pOrientHlp;
-    m_pOrientHlp = nullptr;
+    m_pOrientHlp.reset();
     m_pCtrlDial.clear();
     m_pFtRotate.clear();
     m_pNfRotate.clear();

chart2/source/controller/dialogs/tp_TitleRotation.hxx

@@ -35,7 +35,7 @@ private:
     VclPtr<FixedText>               m_pFtRotate;
     VclPtr<NumericField>            m_pNfRotate;
     VclPtr<TriStateBox>             m_pCbStacked;
-    svx::OrientationHelper*  m_pOrientHlp;
+    std::unique_ptr<svx::OrientationHelper>  m_pOrientHlp;
     VclPtr<FixedText>               m_pFtTextDirection;
     VclPtr<TextDirectionListBox>    m_pLbTextDirection;
     VclPtr<FixedText>               m_pFtABCD;