Add empty check before call "iterator().next()"#232

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Xiqinger wants to merge 1 commit intoyangzongzhuan:masterfrom

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Commits on Mar 26, 2024

Before call next(), no code logic ensures the 'getRealms()' is not empty. Add a empty check before calling 'iterator().next()' to avoid potential NullPointerExceptions or unexpected behavior.
Xiqinger
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