panic when to disable lite-init-stats

[hawkingrei]

Bug Report

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1. Minimal reproduce step (Required)

2. What did you expect to see? (Required)

3. What did you see instead (Required)

/02/27 07:53:21.707 +00:00] [ERROR] [misc.go:116] ["panic in the recoverable goroutine"] [label=domain] [funcInfo=loadStatsWorker] [r="runtime error: invalid memory address or nil pointer dereference"] [stack="github.com/pingcap/tidb/pkg/util.Recover
	/home/jenkins/agent/workspace/build-common/go/src/github.com/pingcap/tidb/pkg/util/misc.go:120
runtime.gopanic
	/usr/local/go/src/runtime/panic.go:914
runtime.panicmem
	/usr/local/go/src/runtime/panic.go:261
runtime.sigpanic
	/usr/local/go/src/runtime/signal_unix.go:861
github.com/pingcap/tidb/pkg/statistics.(*Table).Copy
	/home/jenkins/agent/workspace/build-common/go/src/github.com/pingcap/tidb/pkg/statistics/table.go:282
github.com/pingcap/tidb/pkg/statistics/handle.(*Handle).initStatsHistograms4Chunk
	/home/jenkins/agent/workspace/build-common/go/src/github.com/pingcap/tidb/pkg/statistics/handle/bootstrap.go:167
github.com/pingcap/tidb/pkg/statistics/handle.(*Handle).initStatsHistograms
	/home/jenkins/agent/workspace/build-common/go/src/github.com/pingcap/tidb/pkg/statistics/handle/bootstrap.go:274
github.com/pingcap/tidb/pkg/statistics/handle.(*Handle).InitStats
	/home/jenkins/agent/workspace/build-common/go/src/github.com/pingcap/tidb/pkg/statistics/handle/bootstrap.go:513
github.com/pingcap/tidb/pkg/domain.(*Domain).initStats
	/home/jenkins/agent/workspace/build-common/go/src/github.com/pingcap/tidb/pkg/domain/domain.go:2315
github.com/pingcap/tidb/pkg/domain.(*Domain).loadStatsWorker
	/home/jenkins/agent/workspace/build-common/go/src/github.com/pingcap/tidb/pkg/domain/domain.go:2337
github.com/pingcap/tidb/pkg/util.(*WaitGroupEnhancedWrapper).Run.func1
	/home/jenkins/agent/workspace/build-common/go/src/github.com/pingcap/tidb/pkg/util/wait_group_wrapper.go:96

4. What is your TiDB version? (Required)

[seiya-annie]

/found customer