Fix #9 not closing OS file descriptor.

Author: carlos-jenkins

webhooks.py

@@ -1,6 +1,6 @@
 # -*- coding: utf-8 -*-
 #
-# Copyright (C) 2014, 2015 Carlos Jenkins <carlos@jenkins.co.cr>
+# Copyright (C) 2014, 2015, 2016 Carlos Jenkins <carlos@jenkins.co.cr>
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -24,7 +24,7 @@
 from json import loads, dumps
 from subprocess import Popen, PIPE
 from tempfile import mkstemp
-from os import access, X_OK, remove
+from os import access, X_OK, remove, fdopen
 from os.path import isfile, abspath, normpath, dirname, join, basename
 
 import requests
@@ -72,7 +72,7 @@ def index():
         header_signature = request.headers.get('X-Hub-Signature')
         if header_signature is None:
             abort(403)
-        
+
         sha_name, signature = header_signature.split('=')
         if sha_name != 'sha1':
             abort(501)
@@ -154,8 +154,8 @@ def index():
         return ''
 
     # Save payload to temporal file
-    _, tmpfile = mkstemp()
-    with open(tmpfile, 'w') as pf:
+    osfd, tmpfile = mkstemp()
+    with fdopen(osfd, 'w') as pf:
         pf.write(dumps(payload))
 
     # Run scripts