[PATCH] keys: Remove redundant less-than-zero checks

[Mimi Zohar]

On Sat, 2025-10-11 at 16:48 +0200, Thorsten Blum wrote:
> The local variables 'size_t datalen' are unsigned and cannot be less
> than zero. Remove the redundant conditions.
> 
> Signed-off-by: Thorsten Blum <thorsten.blum at linux.dev>

Reviewed-by: Mimi Zohar <zohar at linux.ibm.com>