From 469a64cebf534b702e50ad9585e63ae3f8ed5d16 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Sergey=20M=E2=80=A4?= <dstftw@gmail.com>
Date: Mon, 2 Feb 2015 21:40:52 +0600
Subject: [PATCH] [downloader/external] Simplify

---
 youtube_dl/downloader/external.py | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/youtube_dl/downloader/external.py b/youtube_dl/downloader/external.py
index 3d6554fe4..012057ecb 100644
--- a/youtube_dl/downloader/external.py
+++ b/youtube_dl/downloader/external.py
@@ -47,8 +47,9 @@ class ExternalFD(FileDownloader):
 
     def _source_address(self, command_option):
         command_part = []
-        if self.ydl.params['source_address'] is not None:
-            command_part = [command_option, self.ydl.params['source_address']]
+        source_address = self.ydl.params.get('source_address')
+        if source_address:
+            command_part = [command_option, source_address]
         return command_part
 
     def _call_downloader(self, tmpfilename, info_dict):