table: pit::FaceRecord stores Face& instead of shared_ptr

refs #3164

Change-Id: Ib23ab2341a37213fee791f2070f13b76da851d53
diff --git a/daemon/table/pit-in-record.hpp b/daemon/table/pit-in-record.hpp
index dd6ad06..45167c3 100644
--- a/daemon/table/pit-in-record.hpp
+++ b/daemon/table/pit-in-record.hpp
@@ -37,7 +37,7 @@
 {
 public:
   explicit
-  InRecord(shared_ptr<Face> face);
+  InRecord(Face& face);
 
   void
   update(const Interest& interest);