Fix ``ftp://`` directory listing URLs from causing a crash when used in

the "Home page" or "Download URL" slots on PyPI.
(merged from the trunk)

--HG--
branch : setuptools-0.6
extra : convert_revision : svn%3A6015fed2-1504-0410-9fe1-9d1591cc4771/sandbox/branches/setuptools-0.6%4047051

EasyInstall.txt

@@ -1098,6 +1098,9 @@ Release Notes/Change History
 0.6b4
  * Fix creating Python wrappers for non-Python scripts
 
+ * Fix ``ftp://`` directory listing URLs from causing a crash when used in the
+   "Home page" or "Download URL" slots on PyPI.
+
 0.6b3
  * Fix local ``--find-links`` eggs not being copied except with
    ``--always-copy``.

setuptools/package_index.py

@@ -162,7 +162,7 @@ class PackageIndex(Environment):
         self.fetched_urls[url] = self.fetched_urls[f.url] = True
 
 
-        if 'html' not in f.headers['content-type'].lower():
+        if 'html' not in f.headers.get('content-type', '').lower():
             f.close()   # not html, we can't process it
             return