cmd/go/internal/web: fix log message

The web package is now used for proxy fetches, so its logs shouldn't
start with "Parsing meta tags".

Change-Id: I22a7dce09e3a681544ee4b860f93c63336e547ca
Reviewed-on: https://go-review.googlesource.com/c/go/+/174740
Run-TryBot: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

src/cmd/go/internal/web/http.go

@@ -127,7 +127,7 @@ func get(security SecurityMode, url *urlpkg.URL) (*Response, error) {
 	// Note: accepting a non-200 OK here, so people can serve a
 	// meta import in their http 404 page.
 	if cfg.BuildV {
-		log.Printf("Parsing meta tags from %s (status code %d)", Redacted(fetched), res.StatusCode)
+		log.Printf("reading from %s: status code %d", Redacted(fetched), res.StatusCode)
 	}
 	r := &Response{
 		URL:        Redacted(fetched),