qcow2: Fix error handling in qcow_save_vmstate
Don't assume success but pass the bdrv_pwrite return value on. Signed-off-by: NKevin Wolf <kwolf@redhat.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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Don't assume success but pass the bdrv_pwrite return value on. Signed-off-by: NKevin Wolf <kwolf@redhat.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>