Correct a typo

tests/test_http.py

Index: tests/test_http.py
diff --git a/tests/test_http.py b/tests/test_http.py
index 43569ed234528043cd91ab951f5b254449212615..943d581d8f05bf9ecf1def52384e69668b839b50 100644
--- a/tests/test_http.py
+++ b/tests/test_http.py
@@ -635,22 +635,22 @@ class TestHttpRequest(unittest.TestCase):
 
   def test_retry_ssl_errors_resumable(self):
     with open(datafile('small.png'), 'rb') as small_png_file:
-      small_png_file_descriptor = BytesIO(small_png_file.read())
-      upload = MediaIoBaseUpload(fd=small_png_file, mimetype='image/png',
-                                 chunksize=500, resumable=True)
-      model = JsonModel()
-
-      request = HttpRequest(
-          HttpMockWithSSLErrors(
-              3, {'status': '200', 'location': 'location'}, '{"foo": "bar"}'),
-          model.response,
-          u'https://www.example.com/file_upload',
-          method='POST',
-          resumable=upload)
-      request._sleep = lambda _x: 0  # do nothing
-      request._rand = lambda: 10
-      response = request.execute(num_retries=3)
-      self.assertEqual({u'foo': u'bar'}, response)
+      small_png_fd = BytesIO(small_png_file.read())
+    upload = MediaIoBaseUpload(fd=small_png_fd, mimetype='image/png',
+                               chunksize=500, resumable=True)
+    model = JsonModel()
+
+    request = HttpRequest(
+        HttpMockWithSSLErrors(
+            3, {'status': '200', 'location': 'location'}, '{"foo": "bar"}'),
+        model.response,
+        u'https://www.example.com/file_upload',
+        method='POST',
+        resumable=upload)
+    request._sleep = lambda _x: 0  # do nothing
+    request._rand = lambda: 10
+    response = request.execute(num_retries=3)
+    self.assertEqual({u'foo': u'bar'}, response)
 
   def test_retry(self):
     num_retries = 5