callchain - fix add_front assignment #2873
Merged
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Notes:
Description
Fix call chain add_front assignment, where _chain should point to the new element.
Status
READY
Migrations
NO
Related PRs
NO
Todos
Deploy notes
No change to build environment, but should be back-ported if accepted.
Steps to test or reproduce
bug fix, will not be triggered unless add_fronts is called.