s390x/s390-virtio-ccw: fix loadparm property getter
The function machine_get_loadparm() is supposed to produce a C-string,
that is a NUL-terminated one, but it does not. ElectricFence can detect
this problem if the loadparm machine property is used.
Let us make the returned string a NUL-terminated one.
Fixes:
7104bae9de ("hw/s390x: provide loadparm property for the machine")
Signed-off-by: Halil Pasic <pasic@linux.ibm.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <
20200723162717.88485-1-pasic@linux.ibm.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>