fixed: pass throug perf-range as an optional

we should not dereference it for STDW where it is expected
to be empty

opm/input/eclipse/Schedule/Well/Connection.hpp

@@ -151,7 +151,7 @@ namespace RestartIO {
         void updateSegment(int segment_number_arg,
                            double center_depth_arg,
                            std::size_t compseg_insert_index,
-                           const std::pair<double,double>& perf_range);
+                           const std::optional<std::pair<double,double>>& perf_range);
         std::size_t sort_value() const;
         const bool& getDefaultSatTabId() const;
         void setDefaultSatTabId(bool id);