Make test_mhlib run again.

There's some wierdness here, but the test ran before and not after,
so I'm just hacking the change out.  Someone more motivated than
me can work out what's really happening.

Raymond: *PLEASE* run the test suite before checking things like
this in!

diff --git a/Lib/mhlib.py b/Lib/mhlib.py
index feb554efa189e1f8ab9c1e5246a3bb8ace6ca6d1..e5900acff9cec908ab7553269fed6f28b2ea4565 100644 (file)
--- a/Lib/mhlib.py
+++ b/Lib/mhlib.py
@@ -788,7 +788,7 @@ class IntSet:
         self.pairs = []
         self.sep = sep
         self.rng = rng
-        if data is not None: self.fromstring(data)
+        if data: self.fromstring(data)
 
     def reset(self):
         self.pairs = []