* Unlike other methods in truncindex, Iterate was not locking before using the Trie, making it potentially race e.g. Delete could result in setting a child to nil, while Iterate dereferenced that node while walking the Trie. Signed-off-by: Petar Petrov <pppepito86@gmail.com> Upstream-commit: 57dada53382106952d287dd1f16773e08213ae8d Component: engine