Revert "skip image when data not exists"

This reverts commit ec60aea7.

DataManager.cs

@@ -53,7 +53,14 @@ namespace ImgGen
             else
             {
                 Console.WriteLine($"Card {code} not found!");
-                return null;
+                Data data = new Data
+                {
+                    code = code,
+                    name = "???",
+                    text = "???"
+                };
+                return data;
+            }
         }
 
         public static string FormatCardDesc(string r)
@@ -84,3 +91,4 @@ namespace ImgGen
         }
     }
 }
+

ImageManager.cs

@@ -149,10 +149,6 @@ namespace ImgGen
         public Bitmap GetImage(int code)
         {
             Data data = DataManager.GetData(code);
-            if (data == null)
-            {
-                return null;
-            }
             return DrawCard(data);
         }