Fix some silliness in link generating code

* lib/viewcvs.py
  (Request.get_link):
    where implies where != ''


git-svn-id: http://viewvc.tigris.org/svn/viewvc/trunk@937 8cb11bc2-c004-0410-86c3-e597b4017df7

lib/viewcvs.py

@@ -408,7 +408,7 @@ class Request:
         del params['root']   
 
     # add path
-    if where and where != '':
+    if where:
       url = url + '/' + where
 
     # add suffix for tarball