var runtime.uniqueMapCleanup

5 uses

	runtime (current package)
		mgc.go#L1766: var uniqueMapCleanup chan struct{} // for unique
		mgc.go#L1792: 		uniqueMapCleanup = make(chan struct{}, 1)
		mgc.go#L1797: 			<-uniqueMapCleanup
		mgc.go#L1815: 	if uniqueMapCleanup != nil {
		mgc.go#L1817: 		case uniqueMapCleanup <- struct{}{}:

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