repo: Watching prefix

Change-Id: Ia315d6e529fa4402ad9ca4706b70db1e75eb054c
Refs: #1784
diff --git a/src/handles/write-handle.hpp b/src/handles/write-handle.hpp
index 48bd0e4..bbbfe28 100644
--- a/src/handles/write-handle.hpp
+++ b/src/handles/write-handle.hpp
@@ -235,6 +235,7 @@
   int m_retryTime;
   int m_credit;
   ndn::time::milliseconds m_noEndTimeout;
+  ndn::time::milliseconds m_interestLifetime;
 };
 
 } // namespace repo