ICU-22824 Fix mem Leak during error in uidna.cpp #1014

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1 error and 12 warnings

Auto-push failed 3 times since the remote branch perfdata rejected pushing all the time. Last exception was: Command 'git' failed with args '-c user.name=github-action-benchmark -c user.email=github@users.noreply.github.com -c http.https://github.com/.extraheader= push ***github.com/unicode-org/icu.git perfdata:perfdata --no-verify': To https://github.com/unicode-org/icu.git ! [remote rejected] perfdata -> perfdata (cannot lock ref 'refs/heads/perfdata': is at 372801377d834312c53ec124ea60b34f8584f55f but expected 7e90d58f24c9e3a8c85771fe3a5e39e134d7f1db) error: failed to push some refs to 'https://github.com/unicode-org/icu.git' : Error: The process '/usr/bin/git' failed with exit code 1

The following actions uses node12 which is deprecated and will be forced to run on node16: gregtatum/github-action-benchmark@d3f06f738e9612988d575db23fae5ca0008d3d12. For more info: https://github.blog/changelog/2023-06-13-github-actions-all-actions-will-run-on-node16-instead-of-node12-by-default/

The following actions uses Node.js version which is deprecated and will be forced to run on node20: gregtatum/github-action-benchmark@d3f06f738e9612988d575db23fae5ca0008d3d12. For more info: https://github.blog/changelog/2024-03-07-github-actions-all-actions-will-run-on-node20-instead-of-node16-by-default/