diff -r 1f3acc30bdfe -r c2d9ef43ff6c mercurial/util.py
--- a/mercurial/util.py	Sun May 13 13:17:50 2012 +0200
+++ b/mercurial/util.py	Sun May 13 13:18:06 2012 +0200
@@ -760,7 +760,7 @@
             ofp.write(chunk)
         ifp.close()
         ofp.close()
-    except:
+    except: # re-raises
         try: os.unlink(temp)
         except OSError: pass
         raise