Fix noise when saving info.blp file

The enum must be sync with the vector. I should rewrite
this stuff otherwise.

src/event.h

@@ -82,9 +82,8 @@ enum class Language {
   fr    = 2,
   de    = 3,
   it    = 4,
-  // Left some space for Korean and Hebrew as I think original translations
-  // should be first, see issue #23
-  pl = 7,
+  pl    = 5,
+  end,
 };
 
 class CEvent