Fix pgregress tests

Author: jfroche

nix/tests/expected/pgrouting.out

@@ -19,12 +19,12 @@ select * from pgr_dijkstra(
   1, -- start node
   4  -- end node
 );
- seq | path_seq | node | edge | cost | agg_cost 
------+----------+------+------+------+----------
-   1 |        1 |    1 |    1 |    1 |        0
-   2 |        2 |    2 |    2 |    1 |        1
-   3 |        3 |    3 |    3 |    1 |        2
-   4 |        4 |    4 |   -1 |    0 |        3
+ seq | path_seq | start_vid | end_vid | node | edge | cost | agg_cost 
+-----+----------+-----------+---------+------+------+------+----------
+   1 |        1 |         1 |       4 |    1 |    1 |    1 |        0
+   2 |        2 |         1 |       4 |    2 |    2 |    1 |        1
+   3 |        3 |         1 |       4 |    3 |    3 |    1 |        2
+   4 |        4 |         1 |       4 |    4 |   -1 |    0 |        3
 (4 rows)
 
 drop schema v cascade;