Crash fixes

app/src/main/java/eu/kanade/tachiyomi/ui/catalogue/CatalogueFragment.kt

@@ -427,9 +427,9 @@ class CatalogueFragment : BaseRxFragment<CataloguePresenter>(), FlexibleViewHold
      * @return true if the item should be selected, false otherwise.
      */
     override fun onListItemClick(position: Int): Boolean {
-        val selectedManga = adapter.getItem(position)
+        val item = adapter.getItem(position) ?: return false
 
-        val intent = MangaActivity.newIntent(activity, selectedManga)
+        val intent = MangaActivity.newIntent(activity, item)
         intent.putExtra(MangaActivity.FROM_CATALOGUE, true)
         startActivity(intent)
         return false

app/src/main/java/eu/kanade/tachiyomi/ui/library/LibraryCategoryFragment.kt

@@ -162,13 +162,12 @@ class LibraryCategoryFragment : BaseFragment(), FlexibleViewHolder.OnListItemCli
      */
     override fun onListItemClick(position: Int): Boolean {
         // If the action mode is created and the position is valid, toggle the selection.
-        if (position == -1) {
-            return false
-        } else if (libraryFragment.actionMode != null) {
+        val item = adapter.getItem(position) ?: return false
+        if (libraryFragment.actionMode != null) {
             toggleSelection(position)
             return true
         } else {
-            openManga(adapter.getItem(position))
+            openManga(item)
             return false
         }
     }

app/src/main/java/eu/kanade/tachiyomi/ui/manga/chapter/ChaptersFragment.kt

@@ -359,11 +359,12 @@ class ChaptersFragment : BaseRxFragment<ChaptersPresenter>(), ActionMode.Callbac
     }
 
     override fun onListItemClick(position: Int): Boolean {
+        val item = adapter.getItem(position) ?: return false
         if (actionMode != null && adapter.mode == FlexibleAdapter.MODE_MULTI) {
             toggleSelection(position)
             return true
         } else {
-            openChapter(adapter.getItem(position))
+            openChapter(item)
             return false
         }
     }