src: onFaceEventNotification only proceed if face id was zero or updated

refs: #5010

Change-Id: Ie5b1f8a5ca2a372890a9ef2a28dc00e1a7c0a366
diff --git a/src/adjacent.cpp b/src/adjacent.cpp
index 4afe6d7..af1f926 100644
--- a/src/adjacent.cpp
+++ b/src/adjacent.cpp
@@ -53,7 +53,7 @@
   {
   }
 
-Adjacent::Adjacent(const ndn::Name& an, const ndn::FaceUri& faceUri,  double lc,
+Adjacent::Adjacent(const ndn::Name& an, const ndn::FaceUri& faceUri, double lc,
                    Status s, uint32_t iton, uint64_t faceId)
     : m_name(an)
     , m_faceUri(faceUri)