R4R: fix Iterator leak, see #2105

[goolAdapter]

…/2105

fix Iterator leak, see #2105

Closes #2105

• Linked to github-issue with discussion and accepted design OR link to spec that describes this work.
• Updated all relevant documentation (docs/)
• Updated all relevant code comments
• Wrote tests
• Added entries in PENDING.md that include links to the relevant issue or PR that most accurately describes the change.
• Updated cmd/gaia and examples/

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For Admin Use:

• Added appropriate labels to PR (ex. wip, ready-for-review, docs)
• Reviewers Assigned
• Squashed all commits, uses message "Merge pull request #XYZ: [title]" (coding standards)

[goolAdapter]

the develop branch is broken before this pr, make test_cli can’t pass.

[fedekunze]

@goolAdapter Thanks ! Can you add the entry of the bug to PENDING.md ?

[alexanderbez]

@goolAdapter yes -- we're pausing any merges to develop until we get master merged in.

[cwgoes]

@goolAdapter yes -- we're pausing any merges to develop until we get master merged in.

This is done, rebase on develop and you should be good to go (also likely will fix CI).

[ValarDragon]

LGTM, just needs a rebase

[cwgoes]

utACK, thanks!