update ca-profile

Change-Id: Iae0124f4ea1e366976eed307a96e3dd540a56278
diff --git a/tools/ndncert-ca-server.cpp b/tools/ndncert-ca-server.cpp
index 3776183..1f91bc8 100644
--- a/tools/ndncert-ca-server.cpp
+++ b/tools/ndncert-ca-server.cpp
@@ -137,7 +137,7 @@
     });
     cachedCertificates[profileData.getName()] = profileData;
     face.setInterestFilter(
-        InterestFilter(ca.getCaConf().m_caItem.m_caPrefix),
+        InterestFilter(ca.getCaConf().m_caProfile.m_caPrefix),
         [&](const InterestFilter&, const Interest& interest) {
           auto search = cachedCertificates.find(interest.getName());
           if (search != cachedCertificates.end()) {