[PATCH v2] stdio-common: Restore while (1) loop in printf_positional

[Andreas Schwab]

On Aug 10 2026, Florian Weimer wrote:

> The old condition is misleading because it is never evaluated.
> Switch back to the original approach before the printf buffer
> rewrite.

Ok.

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Andreas Schwab, SUSE Labs, schwab@suse.de
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