Unbreak tests.
Index: tests/closure_test.cpp
--- tests/closure_test.cpp.orig
+++ tests/closure_test.cpp
@@ -3,6 +3,9 @@
 #include <functional>
 #include <memory>
 
+#include <boost/scoped_ptr.hpp>
+#include <boost/function.hpp>
+
 #include <QCoreApplication>
 #include <QPointer>
 #include <QSharedPointer>