Cleanup toMutable* usage

app/src/main/java/com/hippo/ehviewer/download/DownloadManager.kt

@@ -53,7 +53,7 @@ object DownloadManager : OnSpiderListener {
     private val map: MutableMap<String?, LinkedList<DownloadInfo>>
 
     // All labels without default label
-    val labelList: MutableList<DownloadLabel> = EhDB.allDownloadLabelList.toMutableList()
+    val labelList = EhDB.allDownloadLabelList as MutableList<DownloadLabel>
 
     // Store download info with default label
     val defaultInfoList: LinkedList<DownloadInfo>

app/src/main/java/com/hippo/ehviewer/ui/scene/GalleryListScene.kt

@@ -547,7 +547,7 @@ class GalleryListScene : SearchBarScene(), OnDragHandlerListener, OnClickFabList
             drawerBinding.recyclerViewDrawer.visibility = View.GONE
         }
         lifecycleScope.launchIO {
-            mQuickSearchList = EhDB.allQuickSearch.toMutableList()
+            mQuickSearchList = EhDB.allQuickSearch as MutableList<QuickSearch>
             if (mQuickSearchList.isNotEmpty()) {
                 withUIContext {
                     drawerBinding.tip.visibility = View.GONE

app/src/main/java/eu/kanade/tachiyomi/ui/reader/loader/PageLoader.kt

@@ -49,16 +49,8 @@ abstract class PageLoader {
             onRequest(index)
         }
 
-        // val pagesAbsent = (index until (mPreloads + index).coerceAtMost(size())).toMutableList().removeAll(mImageCache.snapshot().keys)
-        // Should we refresh our LruCache ?
-        val pagesAbsent =
-            ((index - 5).coerceAtLeast(0) until (mPreloads + index).coerceAtMost(size)).mapNotNull { it.takeIf { mImageCache[it] == null } }
-        preloadPages(
-            pagesAbsent,
-            (index - 10).coerceAtLeast(0) to (mPreloads + index + 10).coerceAtMost(
-                size,
-            ),
-        )
+        val pagesAbsent = ((index - 5).coerceAtLeast(0) until (mPreloads + index).coerceAtMost(size)).mapNotNull { it.takeIf { mImageCache[it] == null } }
+        preloadPages(pagesAbsent, (index - 10).coerceAtLeast(0) to (mPreloads + index + 10).coerceAtMost(size))
     }
 
     fun retryPage(index: Int) {