[cleanup] Remove Python 2/3 code duplication

Change-Id: Id2462056f281ff8ce83f2603fc0257c50143fc39
---
M pywikibot/specialbots/__init__.py
1 file changed, 5 insertions(+), 6 deletions(-)

diff --git a/pywikibot/specialbots/__init__.py b/pywikibot/specialbots/__init__.py
index 5edc96a..6f23d5a 100644
--- a/pywikibot/specialbots/__init__.py
+++ b/pywikibot/specialbots/__init__.py
@@ -147,13 +147,12 @@
             info = infile.info()
 
             if PY2:
-                content_type = info.getheader('Content-Type')
-                content_len = info.getheader('Content-Length')
-                accept_ranges = info.getheader('Accept-Ranges')
+                info_get = info.getheader
             else:
-                content_type = info.get('Content-Type')
-                content_len = info.get('Content-Length')
-                accept_ranges = info.get('Accept-Ranges')
+                info_get = info.get
+            content_type = info_get('Content-Type')
+            content_len = info_get('Content-Length')
+            accept_ranges = info_get('Accept-Ranges')
 
             if 'text/html' in content_type:
                 pywikibot.output("Couldn't download the image: "

