cmd/tailscale/cli: fix bug in earlier tailscale debug --local-creds addition

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>

cmd/tailscale/cli/debug.go

@@ -57,10 +57,9 @@ func runDebug(ctx context.Context, args []string) error {
 		}
 		if runtime.GOOS == "windows" {
 			fmt.Printf("curl http://localhost:41112/localapi/v0/status\n")
+			return nil
 		}
-		if runtime.GOOS == "windows" {
-			fmt.Printf("curl --unix-socket %s http://foo/localapi/v0/status\n", paths.DefaultTailscaledSocket())
-		}
+		fmt.Printf("curl --unix-socket %s http://foo/localapi/v0/status\n", paths.DefaultTailscaledSocket())
 		return nil
 	}
 	if debugArgs.goroutines {