ndn-cxx: Fix cancelEvent

Change-Id: Idd3147a231446c4bca826339df355d5e5e40e88b
Refs: #4509
diff --git a/AUTHORS b/AUTHORS
index 26a5d0b..166e8d8 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -18,3 +18,4 @@
   * Christian Kreuzberger       <christian.kreuzberger@itec.aau.at>
   * Yuanzhi Gao                 <billmaxwell@ucla.edu>
   * Mohammad Sabet              <mhasabet@gmail.com>
+  * Xinyu Ma                    <bitmxy@gmail.com>
diff --git a/ndn-cxx b/ndn-cxx
index 0d8a562..d593f6a 160000
--- a/ndn-cxx
+++ b/ndn-cxx
@@ -1 +1 @@
-Subproject commit 0d8a5627859e6c5bef4d1c05d4a7a934770fdc0b
+Subproject commit d593f6ab52fbc306488b495054a695ec592a1039