Christian Kastner ec0dbef816 arg: Flush log before exiting after usage() (#25504) ...

Under certain conditions, it's possible for messages emitted via LOG()
to get lost before exit, apparently because they are emitted by another
thread. common_params_print_usage() uses printf directly, and is not
affected.

Flushing the log before exit seems to resolve this.

2026-07-14 12:03:22 +03:00

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