V3 breadth_first search for originating vertices (where destid='x') fails

[Andrew McDonnell]

INSERT INTO graph_base(from_id, to_id) VALUES (1,2), (2,1);
INSERT INTO graph_base(from_id, to_id) VALUES (1,3), (3,1);
INSERT INTO graph_base(from_id, to_id) VALUES (3,4), (4,3);
INSERT INTO graph_base(from_id, to_id) VALUES (5,6), (6,5);

All of the following are returning NULL:

SELECT * FROM graph WHERE latch = 'breadth_first' AND destid = 1;
SELECT * FROM graph WHERE latch = 'breadth_first' AND destid = 2;
SELECT * FROM graph WHERE latch = 'breadth_first' AND destid = 3;
SELECT * FROM graph WHERE latch = 'breadth_first' AND destid = 4;
SELECT * FROM graph WHERE latch = 'breadth_first' AND destid = 5;
SELECT * FROM graph WHERE latch = 'breadth_first' AND destid = 6;

[Andrew McDonnell (andymc73)]

Now finally, this is that #if 0 in graphcore.cc

Removing the #if0 appears to fix things so just checking test results