diff -r c69e5911888d -r a3378a1b0a05 mercurial/transaction.py
--- a/mercurial/transaction.py	Sat Nov 09 14:50:58 2013 +0100
+++ b/mercurial/transaction.py	Tue Nov 12 16:23:52 2013 +0900
@@ -35,10 +35,7 @@
                 raise
         else:
             try:
-                fp = opener(f)
-                fn = fp.name
-                fp.close()
-                util.unlink(fn)
+                opener.unlink(f)
             except (IOError, OSError), inst:
                 if inst.errno != errno.ENOENT:
                     raise