ava: Fix exit dialog while guest is running. (#5207)

* ava: Fix exit dialog while guest is running.

There is currently an issue while a game runs, the content dialog creation method check if `IsGameRunning` is true to show the popup.
But the condition here is wrong (`window` is null) so it throw a NullException silently in `Dispatcher.UIThread`.
This is now fixed by using the right casting.

* improve condition

* Fix spacing

Directory.Packages.props

@@ -21,7 +21,7 @@
     <PackageVersion Include="LibHac" Version="0.18.0" />
     <PackageVersion Include="Microsoft.CodeAnalysis.Analyzers" Version="3.3.4" />
     <PackageVersion Include="Microsoft.CodeAnalysis.CSharp" Version="4.5.0" />
-    <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.6.0" />
+    <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.6.1" />
     <PackageVersion Include="Microsoft.IO.RecyclableMemoryStream" Version="2.3.2" />
     <PackageVersion Include="MsgPack.Cli" Version="1.0.1" />
     <PackageVersion Include="NUnit" Version="3.13.3" />

src/Ryujinx.Ava/UI/Helpers/BitmapArrayValueConverter.cs

@@ -21,6 +21,7 @@ namespace Ryujinx.Ava.UI.Helpers
             if (value is byte[] buffer && targetType == typeof(IImage))
             {
                 MemoryStream mem = new(buffer);
+
                 return new Bitmap(mem);
             }
 

src/Ryujinx.Ava/UI/Helpers/ContentDialogHelper.cs

@@ -318,7 +318,7 @@ namespace Ryujinx.Ava.UI.Helpers
 
             Window parent = GetMainWindow();
 
-            if (parent is { IsActive: true } and MainWindow window && window.ViewModel.IsGameRunning)
+            if (parent != null && parent.IsActive && (parent as MainWindow).ViewModel.IsGameRunning)
             {
                 contentDialogOverlayWindow = new()
                 {

src/Ryujinx.Ava/UI/Views/Main/MainMenuBarView.axaml.cs

@@ -9,9 +9,7 @@ using Ryujinx.Ava.UI.ViewModels;
 using Ryujinx.Ava.UI.Windows;
 using Ryujinx.Common;
 using Ryujinx.Common.Utilities;
-using Ryujinx.HLE.HOS;
 using Ryujinx.Modules;
-using Ryujinx.Ui.App.Common;
 using Ryujinx.Ui.Common;
 using Ryujinx.Ui.Common.Configuration;
 using Ryujinx.Ui.Common.Helper;

src/Ryujinx.Ava/UI/Windows/MainWindow.axaml.cs

@@ -519,14 +519,14 @@ namespace Ryujinx.Ava.UI.Windows
         private void ConfirmExit()
         {
             Dispatcher.UIThread.InvokeAsync(async () =>
-           {
+            {
-               ViewModel.IsClosing = await ContentDialogHelper.CreateExitDialog();
+                ViewModel.IsClosing = await ContentDialogHelper.CreateExitDialog();
 
-               if (ViewModel.IsClosing)
+                if (ViewModel.IsClosing)
-               {
+                {
-                   Close();
+                    Close();
-               }
+                }
-           });
+            });
         }
 
         public async void LoadApplications()

src/Ryujinx.Ui.Common/App/ApplicationLibrary.cs

@@ -343,7 +343,14 @@ namespace Ryujinx.Ui.App.Common
                                     ulong nacpSize = reader.ReadUInt64();
 
                                     // Reads and stores game icon as byte array
-                                    applicationIcon = Read(assetOffset + iconOffset, (int)iconSize);
+                                    if (iconSize > 0)
+                                    {
+                                        applicationIcon = Read(assetOffset + iconOffset, (int)iconSize);
+                                    }
+                                    else
+                                    {
+                                        applicationIcon = _nroIcon;
+                                    }
 
                                     // Read the NACP data
                                     Read(assetOffset + (int)nacpOffset, (int)nacpSize).AsSpan().CopyTo(controlHolder.ByteSpan);
@@ -666,7 +673,14 @@ namespace Ryujinx.Ui.App.Common
                                 long iconSize = BitConverter.ToInt64(iconSectionInfo, 8);
 
                                 // Reads and stores game icon as byte array
-                                applicationIcon = Read(assetOffset + iconOffset, (int)iconSize);
+                                if (iconSize > 0)
+                                {
+                                    applicationIcon = Read(assetOffset + iconOffset, (int)iconSize);
+                                }
+                                else
+                                {
+                                    applicationIcon = _nroIcon;
+                                }
                             }
                             else
                             {