fix some code smells

Qwirkle/QwirkleClassLibrary/Games/Game.cs

@@ -552,7 +552,7 @@ namespace QwirkleClassLibrary.Games
             return false;
         }
 
-        public static bool CheckTileInCompletedLines(Tile? t1, Tile? t2, ref int nbTiles, ref List<Tile> checkdoubles)
+        public static bool CheckTileInCompletedLines(Tile? t1, ref int nbTiles, ref List<Tile> checkdoubles)
         {
             if (t1 != null)
             {
@@ -566,18 +566,6 @@ namespace QwirkleClassLibrary.Games
                 checkdoubles.Add(t1);
             }
             
-            if (t2 == null) return true;
-            {
-                nbTiles++;
-
-                if (checkdoubles.Any(t => t.CompareTo(t2) == 0))
-                {
-                    return false;
-                }
-
-                checkdoubles.Add(t2);
-            }
-
             return true;
         }
         
@@ -595,7 +583,9 @@ namespace QwirkleClassLibrary.Games
                     break;
                 }
 
-                return CheckTileInCompletedLines(extendedCell?.Tile, extendedCell2?.Tile, ref nbTiles, ref checkdoubles);
+                if(!CheckTileInCompletedLines(extendedCell?.Tile, ref nbTiles, ref checkdoubles)) return false;
+                       
+                if(!CheckTileInCompletedLines(extendedCell2?.Tile, ref nbTiles, ref checkdoubles)) return false;
             }
             
             return nbTiles <= 6;