doc/articles/wiki: fix final-test.patch

Fixes test regression introduced by golang.org/cl/53071.

Change-Id: Ibb085cf6d6be7b91b7c90b7bc6237c10f3097703
Reviewed-on: https://go-review.googlesource.com/60775
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>

doc/articles/wiki/final-test.patch

-*** final.go	2015-06-14 23:59:22.000000000 +0200
---- final-test.go	2015-06-15 00:15:41.000000000 +0200
-***************
-*** 7,12 ****
---- 7,14 ----
-  import (
-  	"html/template"
-  	"io/ioutil"
-+ 	"log"
-+ 	"net"
-  	"net/http"
-  	"regexp"
-  )
-***************
-*** 85,89 ****
-  	http.HandleFunc("/edit/", makeHandler(editHandler))
-  	http.HandleFunc("/save/", makeHandler(saveHandler))
-  
-! 	log.Fatal(http.ListenAndServe(":8080", nil))
-  }
---- 87,101 ----
-  	http.HandleFunc("/edit/", makeHandler(editHandler))
-  	http.HandleFunc("/save/", makeHandler(saveHandler))
-  
-! 	l, err := net.Listen("tcp", "127.0.0.1:0")
-! 	if err != nil {
-! 		log.Fatal(err)
-! 	}
-! 	err = ioutil.WriteFile("final-test-port.txt", []byte(l.Addr().String()), 0644)
-! 	if err != nil {
-! 		log.Fatal(err)
-! 	}
-! 	s := &http.Server{}
-! 	s.Serve(l)
-! 	return
-  }
+--- final.go	2017-08-31 13:19:00.422925489 -0700
++++ final-test.go	2017-08-31 13:23:43.381391659 -0700
+@@ -8,6 +8,7 @@
+ 	"html/template"
+ 	"io/ioutil"
+ 	"log"
++	"net"
+ 	"net/http"
+ 	"regexp"
+ )
+@@ -86,5 +87,15 @@
+ 	http.HandleFunc("/edit/", makeHandler(editHandler))
+ 	http.HandleFunc("/save/", makeHandler(saveHandler))
+ 
+-	log.Fatal(http.ListenAndServe(":8080", nil))
++	l, err := net.Listen("tcp", "127.0.0.1:0")
++	if err != nil {
++		log.Fatal(err)
++	}
++	err = ioutil.WriteFile("final-test-port.txt", []byte(l.Addr().String()), 0644)
++	if err != nil {
++		log.Fatal(err)
++	}
++	s := &http.Server{}
++	s.Serve(l)
++	return
+ }