chunks+ping: follow ndn::Scheduler API changes

Refs: #4883
Change-Id: I8aa48fe4f0613f529763f2efaf799c5db48a0b2c
diff --git a/tools/chunks/catchunks/pipeline-interests-adaptive.cpp b/tools/chunks/catchunks/pipeline-interests-adaptive.cpp
index 7e394ef..4ce277d 100644
--- a/tools/chunks/catchunks/pipeline-interests-adaptive.cpp
+++ b/tools/chunks/catchunks/pipeline-interests-adaptive.cpp
@@ -82,7 +82,7 @@
   }
 
   // schedule the event to check retransmission timer
-  m_checkRtoEvent = m_scheduler.scheduleEvent(m_options.rtoCheckInterval, [this] { checkRto(); });
+  m_checkRtoEvent = m_scheduler.schedule(m_options.rtoCheckInterval, [this] { checkRto(); });
 
   schedulePackets();
 }
@@ -120,7 +120,7 @@
   }
 
   // schedule the next check after predefined interval
-  m_checkRtoEvent = m_scheduler.scheduleEvent(m_options.rtoCheckInterval, [this] { checkRto(); });
+  m_checkRtoEvent = m_scheduler.schedule(m_options.rtoCheckInterval, [this] { checkRto(); });
 }
 
 void