Try and fix weird nullref

.github/workflows/release.yml

@@ -174,7 +174,7 @@ jobs:
         uses: ncipollo/release-action@v1
         with:
           name: ${{ steps.version_info.outputs.build_version }}
-          artifacts: "release_output/*.tar.gz,release_output/*.zip/*AppImage*"
+          artifacts: "release_output/*.tar.gz,release_output/*.zip,release_output/*AppImage*"
           tag: ${{ steps.version_info.outputs.build_version }}
           body: "**Full Changelog**: https://github.com/${{ github.repository }}/compare/${{ steps.version_info.outputs.prev_build_version }}...${{ steps.version_info.outputs.build_version }}"
           omitBodyDuringUpdate: true

src/Ryujinx.UI.Common/Helper/FileAssociationHelper.cs

@@ -101,13 +101,13 @@ namespace Ryujinx.UI.Common.Helper
             {
                 RegistryKey key = Registry.CurrentUser.OpenSubKey(@$"Software\Classes\{ext}");
 
-                if (key is null)
+                var openCmd = key?.OpenSubKey(@"shell\open\command");
+                
+                if (openCmd is null)
                 {
                     return false;
                 }
                 
-                var openCmd = key.OpenSubKey(@"shell\open\command");
-
                 string keyValue = (string)openCmd.GetValue(string.Empty);
 
                 return keyValue is not null && (keyValue.Contains("Ryujinx") || keyValue.Contains(AppDomain.CurrentDomain.FriendlyName));