removing uses of the null-coalescing operator

Author: LPLafontaineB

Assets/Scripts/UnityServices/Lobbies/LobbyServiceFacade.cs

@@ -473,7 +473,11 @@ public async Task UpdateLobbyDataAsync(Dictionary<string, DataObject> data)
                 return;
             }
 
-            var dataCurr = CurrentUnityLobby.Data ?? new Dictionary<string, DataObject>();
+            var dataCurr = CurrentUnityLobby.Data;
+            if (dataCurr == null)
+            {
+                dataCurr = new Dictionary<string, DataObject>();
+            }
 
             foreach (var dataNew in data)
             {

Assets/Scripts/Utils/ProfileManager.cs

@@ -21,7 +21,12 @@ public string Profile
         {
             get
             {
-                return m_Profile ??= GetProfile();
+                if (m_Profile == null)
+                {
+                    m_Profile = GetProfile();
+                }
+
+                return m_Profile;
             }
             set
             {

Packages/com.unity.multiplayer.samples.coop/Utilities/EditorChildSceneLoader.cs

@@ -23,8 +23,14 @@ void Update()
 
     public void SaveSceneSetup()
     {
-        ChildScenesToLoadConfig ??= new List<SceneAsset>();
-        ChildScenesToLoadConfig.Clear();
+        if (ChildScenesToLoadConfig == null)
+        {
+            ChildScenesToLoadConfig = new List<SceneAsset>();
+        }
+        else
+        {
+            ChildScenesToLoadConfig.Clear();
+        }
         foreach (var sceneSetup in EditorSceneManager.GetSceneManagerSetup())
         {
             ChildScenesToLoadConfig.Add(AssetDatabase.LoadAssetAtPath<SceneAsset>(sceneSetup.path));

Packages/com.unity.multiplayer.samples.coop/Utilities/Net/SessionManager.cs

@@ -30,7 +30,18 @@ public class SessionManager<T> where T : struct, ISessionPlayerData
             m_ClientIDToPlayerId = new Dictionary<ulong, string>();
         }
 
-        public static SessionManager<T> Instance => s_Instance ??= new SessionManager<T>();
+        public static SessionManager<T> Instance
+        {
+            get
+            {
+                if (s_Instance == null)
+                {
+                    s_Instance = new SessionManager<T>();
+                }
+
+                return s_Instance;
+            }
+        }
 
         static SessionManager<T> s_Instance;