Drop memset of atomic write sessions

Author: hasty

examples/thermostat/thermostat-common/include/atomic-write-manager.h

@@ -66,7 +66,7 @@ class ThermostatAtomicWriteManager : public AtomicWriteManager
 private:
     static ThermostatAtomicWriteManager sInstance;
 
-    ThermostatAtomicWriteManager();
+    ThermostatAtomicWriteManager()  = default;
     ~ThermostatAtomicWriteManager() = default;
 
     ThermostatAtomicWriteManager(const ThermostatAtomicWriteManager &)             = delete;
@@ -86,8 +86,8 @@ class ThermostatAtomicWriteManager : public AtomicWriteManager
     struct AtomicWriteSession
     {
         AtomicWriteState state = kAtomicWriteState_Closed;
-        ScopedNodeId nodeId;
-        EndpointId endpointId = kInvalidEndpointId;
+        ScopedNodeId nodeId    = ScopedNodeId();
+        EndpointId endpointId  = kInvalidEndpointId;
     };
 
     AtomicWriteDelegate * mDelegate;

examples/thermostat/thermostat-common/src/atomic-write-manager.cpp

@@ -35,11 +35,6 @@ namespace Thermostat {
 
 ThermostatAtomicWriteManager ThermostatAtomicWriteManager::sInstance;
 
-ThermostatAtomicWriteManager::ThermostatAtomicWriteManager()
-{
-    memset(mAtomicWriteSessions, 0, sizeof(mAtomicWriteSessions));
-}
-
 /**
  * @brief Callback that is called when the timeout for editing the presets expires.
  *