[PATCH 1 of 4] extensions.disabled: return {} instead of None no extensions are disabled

[Augie Fackler]

# HG changeset patch
# User Augie Fackler <raf at durin42.com>
# Date 1336899967 18000
# Node ID fef932bddc3e07ad35783e839d34159a78e1f34c
# Parent  654b9e1966f76d38b11fbd1d518efce5d58caa88
extensions.disabled: return {} instead of None no extensions are disabled

diff --git a/mercurial/extensions.py b/mercurial/extensions.py
--- a/mercurial/extensions.py
+++ b/mercurial/extensions.py
@@ -274,7 +274,7 @@
 
     paths = _disabledpaths()
     if not paths:
-        return None
+        return {}
 
     exts = {}
     for name, path in paths.iteritems():