fw: rename "Interest rebuff" to "Interest reject"

Change-Id: I8275354a3eff6f4785187a8fb00da1d421df8460
diff --git a/daemon/fw/forwarder.cpp b/daemon/fw/forwarder.cpp
index 4cc93d0..d438f10 100644
--- a/daemon/fw/forwarder.cpp
+++ b/daemon/fw/forwarder.cpp
@@ -166,9 +166,9 @@
 }
 
 void
-Forwarder::onInterestRebuff(shared_ptr<pit::Entry> pitEntry)
+Forwarder::onInterestReject(shared_ptr<pit::Entry> pitEntry)
 {
-  NFD_LOG_DEBUG("onInterestRebuff interest=" << pitEntry->getName());
+  NFD_LOG_DEBUG("onInterestReject interest=" << pitEntry->getName());
 
   // set PIT straggler timer
   this->setStragglerTimer(pitEntry);