forgot to rename this variable

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk/utils@40506 20353a03-c40f-0410-a6d1-a30d3c3de9de

cloudooo/document.py

@@ -75,7 +75,7 @@ class FileSystemDocument(object):
         zipfile.extractall(path=self.directory_name)
         zipfile.close()
         filename_list = listdir(self.directory_name)
-        if 'index.html' in file_list:
+        if 'index.html' in filename_list:
           file_path = join(self.directory_name, 'index.html')
         else:
           mimetype_list = ['text/html', 'application/xhtml+xml']