const runtime.emptyOne

11 uses

	runtime (current package)
		map.go#L87: 	emptyOne       = 1 // this cell is empty
		map.go#L105: 	return x <= emptyOne
		map.go#L198: 	return h > emptyOne && h < minTopHash
		map.go#L808: 			b.tophash[i] = emptyOne
		map.go#L836: 				if b.tophash[i] != emptyOne {
		map_fast32.go#L345: 			b.tophash[i] = emptyOne
		map_fast32.go#L371: 				if b.tophash[i] != emptyOne {
		map_fast64.go#L349: 			b.tophash[i] = emptyOne
		map_fast64.go#L375: 				if b.tophash[i] != emptyOne {
		map_faststr.go#L364: 			b.tophash[i] = emptyOne
		map_faststr.go#L390: 				if b.tophash[i] != emptyOne {