loplugin:useuniqueptr in TextApiObject

Change-Id: I418f18a1e090dab2923395963b2a003df58890ae
Reviewed-on: https://gerrit.libreoffice.org/54859Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>

sd/inc/textapi.hxx

@@ -47,7 +47,7 @@ public:
     static TextApiObject* getImplementation( const css::uno::Reference< css::text::XText >& );
 
 private:
-    TextAPIEditSource*  mpSource;
+    std::unique_ptr<TextAPIEditSource>  mpSource;
     TextApiObject( TextAPIEditSource* pEditSource );
 };
 

sd/source/core/text/textapi.cxx

@@ -144,8 +144,7 @@ void TextApiObject::dispose()
     if( mpSource )
     {
         mpSource->Dispose();
-        delete mpSource;
-        mpSource = nullptr;
+        mpSource.reset();
     }
 
 }