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: 7104bae9 ("hw/s390x: provide loadparm property for the machine") Signed-off-by: NHalil Pasic <pasic@linux.ibm.com> Reviewed-by: NThomas Huth <thuth@redhat.com> Message-Id: <20200723162717.88485-1-pasic@linux.ibm.com> Signed-off-by: NCornelia Huck <cohuck@redhat.com>
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