do not merge segregated highways in if there is actual turns involved

src/extractor/guidance/mergable_road_detector.cpp

@@ -395,6 +395,7 @@ bool MergableRoadDetector::HaveSameDirection(const NodeID intersection_node,
 
     const auto combined_road_width = 0.5 * (lane_count_lhs + lane_count_rhs) * ASSUMED_LANE_WIDTH;
     const auto constexpr MAXIMAL_ALLOWED_SEPARATION_WIDTH = 8;
+
     return distance_between_roads <= combined_road_width + MAXIMAL_ALLOWED_SEPARATION_WIDTH;
 }