This patch fixes compilation with uClibc by applying the same fallback
as commit e12d76176d to the `getversion.c`
file, which was previously overlooked.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: José Luis Salvador Rufo <salvador.joseluis@gmail.com>
Closes#16735Closes#16741