[1470] Correct data type of member variable in MockAccess::MockIteratorNameContext

src/lib/datasrc/tests/database_unittest.cc

@@ -442,7 +442,7 @@ private:
 
     private:
         const std::string searched_name_;
-        int cur_record_;
+        size_t cur_record_;
         std::vector< std::vector<std::string> > cur_name;
     };