Automatic merge from submit-queue
Fix incorrect if conditions
When the current conditions `if inspect == nil && inspect.Config == nil && inspect.Config.Labels == nil` is true, the func containerAndPodFromLabels will return. else will not. Suppose `inspect != nil` but `inspect.Config == nil`, the current conditions will be false and the func won't return, then the below `labels := inspect.Config.Labels` will lead to panic.
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