pywsgi: split run_application() into run_application() and process_result()

--HG--
extra : transplant_source : %C9%A5%B3%C6%7C%E0%8FC%9E%7C%E4%7CBl%9A%A6%FC%87%BFg

gevent/pywsgi.py

@@ -383,8 +383,7 @@ class WSGIHandler(object):
             length,
             delta)
 
-    def run_application(self):
-        self.result = self.application(self.environ, self.start_response)
+    def process_result(self):
         for data in self.result:
             if data:
                 self.write(data)
@@ -394,6 +393,10 @@ class WSGIHandler(object):
             self.wfile.writelines('0\r\n\r\n')
             self.response_length += 5
 
+    def run_application(self):
+        self.result = self.application(self.environ, self.start_response)
+        self.process_result()
+
     def handle_one_response(self):
         self.time_start = time.time()
         self.status = None