Disallow any directories named LongSprites/

src/w_wad.c

@@ -2658,6 +2658,7 @@ static lumpchecklist_t folderblacklist[] =
 	{"Lua/", 4},
 	{"SOC/", 4},
 	{"Sprites/", 8},
+	{"LongSprites/", 12},
 	{"Textures/", 9},
 	{"Patches/", 8},
 	{"Flats/", 6},