修复 request.proxy 实例属性冲突问题

FworkSpider/feapder/network/request.py

@@ -463,7 +463,7 @@ class Request(object):
         Returns: ip:port
 
         """
-        proxies = self.proxies()
+        proxies = self.requests_kwargs.get("proxies")
         if proxies:
             return re.sub(
                 "http.*?//", "", proxies.get("http", "") or proxies.get("https", "")