journal: add default constructor to Future

Signed-off-by: Jason Dillaman <dillaman@redhat.com>

diff --git a/src/journal/Future.h b/src/journal/Future.h
index 3ded9f6d9011a4385e9414003977e18f05c88021..88ad436ef2fba80217f2d2fe8138ed39b2b333ec 100644 (file)
--- a/src/journal/Future.h
+++ b/src/journal/Future.h
@@ -20,8 +20,13 @@ class Future {
 public:
   typedef boost::intrusive_ptr<FutureImpl> FutureImplPtr;
 
+  Future() {}
   Future(const FutureImplPtr &future_impl) : m_future_impl(future_impl) {}
 
+  inline bool is_valid() const {
+    return m_future_impl;
+  }
+
   void flush(Context *on_safe);
   void wait(Context *on_safe);