Make StringIO work in --disable-unicode builds...
diff --git a/Lib/test/test_StringIO.py b/Lib/test/test_StringIO.py
index a340e3b..9deba0d 100644
--- a/Lib/test/test_StringIO.py
+++ b/Lib/test/test_StringIO.py
@@ -73,6 +73,8 @@
 
     def test_unicode(self):
 
+        if not test_support.have_unicode: return
+
         # The StringIO module also supports concatenating Unicode
         # snippets to larger Unicode strings. This is tested by this
         # method. Note that cStringIO does not support this extension.