loplugin:useuniqueptr in SwSendMailDialog

Change-Id: I653066c25fd627d98e63f7ae94a56954c9c01583
Reviewed-on: https://gerrit.libreoffice.org/58248
Tested-by: Jenkins
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>

sw/source/ui/dbui/mmoutputtypepage.cxx

@@ -309,7 +309,7 @@ void SwSendMailDialog::dispose()
         {
         }
     }
-    delete m_pImpl;
+    m_pImpl.reset();
     m_pStatus.disposeAndClear();
     m_pTransferStatus.clear();
     m_pPaused.clear();

sw/source/ui/inc/mmresultdialogs.hxx

@@ -179,7 +179,7 @@ class SwSendMailDialog : public Dialog
     bool                    m_bCancel;
     bool                    m_bDestructionEnabled;
 
-    SwSendMailDialog_Impl*  m_pImpl;
+    std::unique_ptr<SwSendMailDialog_Impl> m_pImpl;
     SwMailMergeConfigItem*  m_pConfigItem;
     sal_Int32               m_nExpectedCount;
     sal_Int32               m_nSendCount;