const runtime.noCheck

4 uses

	runtime (current package)
		map.go#L107: 	noCheck = 1<<(8*goarch.PtrSize) - 1
		map.go#L898: 				checkBucket = noCheck
		map.go#L902: 			checkBucket = noCheck
		map.go#L923: 		if checkBucket != noCheck && !h.sameSizeGrow() {