nlsrc: adapt to ndn-cxx SegmentFetcher API change

Refs: #2734
Change-Id: I76f1f1a6b95d2df18a8deef545be5027ad6bbc7c
diff --git a/tools/nlsrc.cpp b/tools/nlsrc.cpp
index 3d43a62..d50d6bd 100644
--- a/tools/nlsrc.cpp
+++ b/tools/nlsrc.cpp
@@ -221,7 +221,7 @@
 
   ndn::util::SegmentFetcher::fetch(m_face,
                                    interest,
-                                   ndn::util::DontVerifySegment(),
+                                   m_validator,
                                    std::bind(&Nlsrc::onFetchSuccess<T>,
                                              this, _1, recordLsa),
                                    std::bind(&Nlsrc::onTimeout, this, _1, _2));