Filter out tmp directories for download badge

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

@@ -100,7 +100,9 @@ class DownloadCache(
         if (sourceDir != null) {
             val mangaDir = sourceDir.files[provider.getMangaDirName(manga)]
             if (mangaDir != null) {
-                return mangaDir.files.size
+                return mangaDir.files
+                        .filter { !it.endsWith(Downloader.TMP_DIR_SUFFIX) }
+                        .size
             }
         }
         return 0

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

@@ -246,7 +246,7 @@ class Downloader(
     private fun downloadChapter(download: Download): Observable<Download> = Observable.defer {
         val chapterDirname = provider.getChapterDirName(download.chapter)
         val mangaDir = provider.getMangaDir(download.manga, download.source)
-        val tmpDir = mangaDir.createDirectory("${chapterDirname}_tmp")
+        val tmpDir = mangaDir.createDirectory(chapterDirname + TMP_DIR_SUFFIX)
 
         val pageListObservable = if (download.pages == null) {
             // Pull page list from network and add them to download object
@@ -436,4 +436,8 @@ class Downloader(
         return queue.none { it.status <= Download.DOWNLOADING }
     }
 
+    companion object {
+        const val TMP_DIR_SUFFIX = "_tmp"
+    }
+
 }