First part of comment processing

Author: Jeshibu

source/Generic/GameRelations/GameRelationsSettings.cs

@@ -205,7 +205,9 @@ public void UpgradeSettings()
             int currentVersion = 2;
 
             if (settings.SettingsVersion < 2)
+            {
                 SetAdvancedSectionDefaults();
+            }
 
             Settings.SettingsVersion = currentVersion;
         }

source/Generic/GameRelations/PlayniteControls/GameRelationsBase.xaml.cs

@@ -275,7 +275,7 @@ protected static T GetAnyCommonItem<T>(List<T> listToMatch, HashSet<T> hashSet)
         /// Returns false if the list is null or empty.</returns>
         protected static bool HashSetContainsAnyItem<T>(IEnumerable<T> listToMatch, HashSet<T> hashSet)
         {
-            if (listToMatch is null)
+            if (listToMatch is null || !listToMatch.Any())
             {
                 return false;
             }

source/Generic/GameRelations/PlayniteControls/SimilarGamesControl.cs

@@ -33,27 +33,27 @@ public SimilarGamesControl(IPlayniteAPI playniteApi, GameRelationsSettings setti
 
         public override IEnumerable<Game> GetMatchingGames(Game game)
         {
-            var gtm = GetGameToMatchInfo(game);
+            var gameToMatchInfo = GetGameToMatchInfo(game);
 
             var similarityScores = new Dictionary<Game, double>();
             foreach (var otherGame in PlayniteApi.Database.Games)
             {
-                if (otherGame.Id == gtm.Game.Id)
+                if (otherGame.Id == gameToMatchInfo.Game.Id)
                 {
                     continue;
                 }
 
-                if (!gtm.Game.Hidden && otherGame.Hidden)
+                if (!gameToMatchInfo.Game.Hidden && otherGame.Hidden)
                 {
                     continue;
                 }
 
-                if (_controlSettings.ExcludeGamesSameSeries && HashSetContainsAnyItem(otherGame.SeriesIds, gtm.SeriesIds))
+                if (_controlSettings.ExcludeGamesSameSeries && HashSetContainsAnyItem(otherGame.SeriesIds, gameToMatchInfo.SeriesIds))
                 {
                     continue;
                 }
 
-                if (GamesAreSimilar(gtm, otherGame, out double similarity))
+                if (GamesAreSimilar(gameToMatchInfo, otherGame, out double similarity))
                 {
                     similarityScores.Add(otherGame, similarity);
                 }
@@ -67,15 +67,15 @@ public override IEnumerable<Game> GetMatchingGames(Game game)
 
         private GameToMatchInfo GetGameToMatchInfo(Game game)
         {
-            var gtm = new GameToMatchInfo(game);
+            var gameToMatchInfo = new GameToMatchInfo(game);
             foreach (var field in _controlSettings.FieldSettings)
             {
                 if (field.Enabled)
                 {
-                    gtm.FilteredValues[field.Field] = GetFilteredValue(game, field.Field).ToHashSet();
+                    gameToMatchInfo.FilteredValues[field.Field] = GetFilteredValue(game, field.Field).ToHashSet();
                 }
             }
-            return gtm;
+            return gameToMatchInfo;
         }
 
         protected HashSet<Guid> GetItemsToIgnore(GameField field)