Use 0 as port like #6766 [Bug #6959]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@36877 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

test/net/http/test_https.rb

@@ -24,7 +24,7 @@ class TestNetHTTPS < Test::Unit::TestCase
 
   CONFIG = {
     'host' => '127.0.0.1',
-    'port' => 10082, # different from test_http.rb
+    'port' => 0,
     'proxy_host' => nil,
     'proxy_port' => nil,
     'ssl_enable' => true,