DownloadProvider: Remove duplicate in valid chapter dir name list (#7826)

app/src/main/java/eu/kanade/tachiyomi/data/download/DownloadProvider.kt

@@ -157,7 +157,7 @@ class DownloadProvider(private val context: Context) {
      */
     fun getValidChapterDirNames(chapterName: String, chapterScanlator: String?): List<String> {
         val chapterDirName = getChapterDirName(chapterName, chapterScanlator)
-        return buildList(5) {
+        return buildList(4) {
             // Folder of images
             add(chapterDirName)
 
@@ -168,10 +168,10 @@ class DownloadProvider(private val context: Context) {
                 // Previously null scanlator fields were converted to "" due to a bug
                 add("_$chapterDirName")
                 add("_$chapterDirName.cbz")
+            } else {
+                // Legacy chapter directory name used in v0.9.2 and before
+                add(DiskUtil.buildValidFilename(chapterName))
             }
-
-            // Legacy chapter directory name used in v0.9.2 and before
-            add(DiskUtil.buildValidFilename(chapterName))
         }
     }
 }