[PATCH] qemu: Don't update count of vCPUs if hot-plug fails silently

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When cpu hotplug fails without reporting an error, we would fail the
command but update the count of vCPUs anyways.

Commit 761fc481365703b861429d73a341bde352ba8d41 fixed the case when CPU
hot-unplug failed silently, but forgot to fix up the value in this case.

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1000357
---
 src/qemu/qemu_driver.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
index 0a8e518..c39f04d 100644
--- a/src/qemu/qemu_driver.c
+++ b/src/qemu/qemu_driver.c
@@ -3982,6 +3982,7 @@ static int qemuDomainHotplugVcpus(virQEMUDriverPtr driver,
                        _("got wrong number of vCPU pids from QEMU monitor. "
                          "got %d, wanted %d"),
                        ncpupids, vcpus);
+        vcpus = oldvcpus;
         ret = -1;
         goto cleanup;
     }
-- 
1.8.3.2

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