sadbox: Fix bundling (#61873)

The type of this value varies across glibc and musl, this works on both

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Release Notes:

- N/A or Added/Fixed/Improved ...
f620cbc04eCameron Mcloughlin committed on 7/29/2026, 4:40:38 PM· committed by GitHubparentb9256fa
1 file changedLine totals unavailable