wifi: No need for scheduling SwitchToSleep() after 728f4651

src/wifi/model/wifi-phy.cc

@@ -1426,13 +1426,7 @@ WifiPhy::SetSleepMode()
         // The PHY object may be in CCA_BUSY state because it is receiving a preamble. Cancel
         // preamble events before switching to sleep state
         Reset();
-        // It may happen that we request to switch to sleep at the same time the reception of
-        // a PPDU ends. In such a case, WifiPhyStateHelper::GetState() does not return RX
-        // (m_endRx equals now), we get here and set the state to SLEEP. However,
-        // WifiPhyStateHelper::DoSwitchFromRx() may be called after this function (at the same
-        // simulation time), thus hitting the assert that checks that the state is IDLE or
-        // CCA_BUSY.
-        Simulator::ScheduleNow(&WifiPhyStateHelper::SwitchToSleep, m_state);
+        m_state->SwitchToSleep();
         break;
     case WifiPhyState::SLEEP:
         NS_LOG_DEBUG("already in sleep mode");