#663 cannot track errors inside gop-enabled objects

[sistisette]

If an error is produced inside a gop-enabled abstraction or subpatch, then when you go to "Find / Last error", instead of opening the subpatch and abstraction and selecting the object triggering the error, Pd opens the canvas CONTAINING the subpatch or abstraction, and doesn't select anything.

Attached file illustrates the issue: open "test_error_bug.pd", that's the main patch.

[sistisette]