Update

vendor/golang.org/x/sys/windows/registry/key.go

@@ -198,7 +198,20 @@ type KeyInfo struct {
 
 // ModTime returns the key's last write time.
 func (ki *KeyInfo) ModTime() time.Time {
-	return time.Unix(0, ki.lastWriteTime.Nanoseconds())
+	lastHigh, lastLow := ki.lastWriteTime.HighDateTime, ki.lastWriteTime.LowDateTime
+	// 100-nanosecond intervals since January 1, 1601
+	hsec := uint64(lastHigh)<<32 + uint64(lastLow)
+	// Convert _before_ gauging; the nanosecond difference between Epoch (00:00:00
+	// UTC, January 1, 1970) and Filetime's zero offset (January 1, 1601) is out
+	// of bounds for int64: -11644473600*1e7*1e2 < math.MinInt64
+	sec := int64(hsec/1e7) - 11644473600
+	nsec := int64(hsec%1e7) * 100
+	return time.Unix(sec, nsec)
+}
+
+// modTimeZero reports whether the key's last write time is zero.
+func (ki *KeyInfo) modTimeZero() bool {
+	return ki.lastWriteTime.LowDateTime == 0 && ki.lastWriteTime.HighDateTime == 0
 }
 
 // Stat retrieves information about the open key k.