I applied a last minute review fix to the api as it was not used but
evidently missed the one place where it had been set by copy & paste.
Message-ID: <20261029161310.2065290-3-alex.bennee@linaro.org>
Fixes: e0a7139b21 ("tests/functional: add tuxrun kvm gdb test for s390x")
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>