ICU-22934 clean up error handling in PR#3230#3231

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FrankYFTang wants to merge 1 commit intounicode-org:mainfrom FrankYFTang:ICU-22934-rbbi-limit2

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Commits on Oct 10, 2024

ICU-22934 Fix typo in PR#3230
FrankYFTang
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