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由 aliguori 提交于
[ As requested, broken out of the monitor rework series. ] Avoid a segfault when the user issues 'change vnc' without having vnc enabled on startup. Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6616 c046a42c-6fe2-441c-8c8c-71466251a162
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