s390x-cpu property setters set_feature() and set_feature_group()
dereference @errp when the visitor fails. That's wrong; see the big
comment in error.h. Introduced in commit 0754f60429 "s390x/cpumodel:
expose features and feature groups as properties".
No caller actually passes null.
Fix anyway: splice in a local Error *err, and error_propagate().
Cc: David Hildenbrand <david@redhat.com>
Cc: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Message-Id: <20191204093625.14836-13-armbru@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>