Fix bitvect.test.

* src/tests/bitvect.cc: Fix it, it was failing an assert() on 32bit
architectures because the subset test was done in the wrong order.
Reported by Christopher Ziegler.
* NEWS: Mention it.

NEWS

@@ -76,6 +76,8 @@ New in spot 1.99.2a (not yet released)
     - Fix spurious failure of uniq.test under different locales.
     - ltlcross now recovers from out-of-memory errors during
       state-space products.
+    - bitvect.test was failing on 32bit with assertions enabled
+      because of a bug in the test case.
 
 New in spot 1.99.2 (2015-07-18)
 

src/tests/bitvect.cc

 // -*- coding: utf-8 -*-
-// Copyright (C) 2013, 2014 Laboratoire de Recherche et Développement
-// de l'Epita (LRDE).
+// Copyright (C) 2013, 2014, 2015 Laboratoire de Recherche et
+// Développement de l'Epita (LRDE).
 //
 // This file is part of Spot, a model checking library.
 //
@@ -65,7 +65,7 @@ int main()
   ECHO(x);
 
   std::cout << "subset? " << w->is_subset_of(*x)
-	    << ' ' << w->is_subset_of(*v) << '\n';
+	    << ' ' << v->is_subset_of(*w) << '\n';
 
   for (size_t i = 0; i < 30; ++i)
     w->push_back((i & 3) == 0);