const runtime.waitReasonChanReceiveNilChan

4 uses

	runtime (current package)
		chan.go#L533: 		gopark(nil, nil, waitReasonChanReceiveNilChan, traceBlockForever, 2)
		runtime2.go#L1047: 	waitReasonChanReceiveNilChan                      // "chan receive (nil chan)"
		runtime2.go#L1094: 	waitReasonChanReceiveNilChan:    "chan receive (nil chan)",
		runtime2.go#L1179: 	waitReasonChanReceiveNilChan:  true,