Replace IsRunning() with IsPending()

From NS-3 change log:
* (core) Deprecated "EventId::IsRunning()". It has been replaced with
"EventId::IsPending()".

Signed-off-by: Anders Martinsson <anders.martinsson@intinor.se>

Author: Sikabo

model/linux/linux-socket-impl.cc

@@ -150,7 +150,7 @@ LinuxSocketImpl::LinuxSocketImpl ()
 
 LinuxSocketImpl::~LinuxSocketImpl ()
 {
-  if (m_poll.IsRunning ())
+  if (m_poll.IsPending ())
     {
       m_poll.Cancel ();
     }

model/task-manager.cc

@@ -310,7 +310,7 @@ TaskManager::Wakeup (Task *task)
     }
   task->m_state = Task::ACTIVE;
   m_scheduler->Enqueue (task);
-  if ((0 == m_current) && (!m_nextSchedule.IsRunning ()))
+  if ((0 == m_current) && (!m_nextSchedule.IsPending ()))
     {
       m_nextSchedule = Simulator::ScheduleNow (&TaskManager::Schedule, this);
     }

model/unix-timer-fd.cc

@@ -249,7 +249,7 @@ UnixTimerFd::Settime (int flags,
 int
 UnixTimerFd::Gettime (struct itimerspec *cur_value) const
 {
-  if (!m_timer.IsRunning ())
+  if (!m_timer.IsPending ())
     {
       cur_value->it_value.tv_sec = 0;
       cur_value->it_value.tv_nsec = 0;