const runtime.waitReasonCleanupWait

3 uses

	runtime (current package)
		mcleanup.go#L522: 		goparkunlock(&q.lock, waitReasonCleanupWait, traceBlockSystemGoroutine, 1)
		runtime2.go#L1269: 	waitReasonCleanupWait                             // "cleanup wait"
		runtime2.go#L1319: 	waitReasonCleanupWait:           "cleanup wait",