loplugin:useuniqueptr in mysqlc

Change-Id: Ife3a044beae03c7623c1bd3c2ef6ce5595f97cca
Reviewed-on: https://gerrit.libreoffice.org/53223Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>

mysqlc/source/mysqlc_statement.cxx

@@ -67,8 +67,7 @@ OCommonStatement::~OCommonStatement()
 void OCommonStatement::disposeResultSet()
 {
     // free the cursor if alive
-    delete cppStatement;
-    cppStatement = nullptr;
+    cppStatement.reset();
 }
 
 void OCommonStatement::disposing()
@@ -78,7 +77,7 @@ void OCommonStatement::disposing()
     disposeResultSet();
 
     m_xConnection.clear();
-    delete cppStatement;
+    cppStatement.reset();
 
     OCommonStatement_IBase::disposing();
 }

mysqlc/source/mysqlc_statement.hxx

@@ -66,7 +66,7 @@ namespace connectivity
         protected:
             rtl::Reference<OConnection> m_xConnection;  // The owning Connection object
 
-            sql::Statement          *cppStatement;
+            std::unique_ptr<sql::Statement> cppStatement;
 
         protected:
             void disposeResultSet();