code style fix

Change-Id: I2f57ac1eb9c01063752adfc452ff0f1db3367fe3
diff --git a/src/identity-challenge/challenge-email.cpp b/src/identity-challenge/challenge-email.cpp
index be7cd2a..502885e 100644
--- a/src/identity-challenge/challenge-email.cpp
+++ b/src/identity-challenge/challenge-email.cpp
@@ -55,7 +55,8 @@
     }
     auto lastComponentRequested = readString(request.m_cert.getIdentity().get(-1));
     if (lastComponentRequested != emailAddress) {
-      NDN_LOG_TRACE("Email and requested name do not match. Email " << emailAddress << "requested last component " << lastComponentRequested);
+      NDN_LOG_TRACE("Email and requested name do not match. Email " << emailAddress << "requested last component "
+                    << lastComponentRequested);
     }
     std::string emailCode = generateSecretCode();
     JsonSection secretJson;