clean header file include

Change-Id: I5df52db13f964a92bba7cc8659ec6bcc222f5cbb
diff --git a/tests/unit-tests/ca-module.t.cpp b/tests/unit-tests/ca-module.t.cpp
index 4e3a94a..2bee0c4 100644
--- a/tests/unit-tests/ca-module.t.cpp
+++ b/tests/unit-tests/ca-module.t.cpp
@@ -427,7 +427,7 @@
   signatureInfo.setValidityPeriod(security::ValidityPeriod(time::system_clock::now(),
                                                            time::system_clock::now() + time::hours(10)));
   m_keyChain.sign(clientCert, signingByKey(clientKey.getName()).setSignatureInfo(signatureInfo));
-  CertificateRequest certRequest(Name("/ndn"), "122", RequestType::NEW, Status::SUCCESS, clientCert);
+  RequestState certRequest(Name("/ndn"), "122", RequestType::NEW, Status::SUCCESS, clientCert);
   auto issuedCert = ca.issueCertificate(certRequest);
 
   ClientModule client(m_keyChain);