net/netip: use const for max address length

Makes it consistent with other code in net/netip, also constants
are visible through LSP hover, which makes it easier to see the size.

Change-Id: I3d02c860ac3c61cc037eaca5418297f78698c3f8
GitHub-Last-Rev: 785a8d58c372f5e1faa2e43dd1991d7040e36603
GitHub-Pull-Request: golang/go#69468
Reviewed-on: https://go-review.googlesource.com/c/go/+/613356
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>

diff --git a/src/net/netip/netip.go b/src/net/netip/netip.go
index a1e93cb29bfbd9427f51debc43f89df841d8bd74..82c05011399c28c74535d90004e2b57e32e1d7e9 100644 (file)
--- a/src/net/netip/netip.go
+++ b/src/net/netip/netip.go
@@ -974,16 +974,16 @@ func (ip Addr) MarshalText() ([]byte, error) {
        case z0:
                return []byte(""), nil
        case z4:
-               max := len("255.255.255.255")
+               const max = len("255.255.255.255")
                b := make([]byte, 0, max)
                return ip.appendTo4(b), nil
        default:
                if ip.Is4In6() {
-                       max := len("::ffff:255.255.255.255%enp5s0")
+                       const max = len("::ffff:255.255.255.255%enp5s0")
                        b := make([]byte, 0, max)
                        return ip.appendTo4In6(b), nil
                }
-               max := len("ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff%enp5s0")
+               const max = len("ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff%enp5s0")
                b := make([]byte, 0, max)
                return ip.appendTo6(b), nil
        }