Fixed bug for older devices

Hoping that the viewer crashing bug is fixed
Version 2.11

app/src/main/java/xyz/quaver/pupil/ui/ReaderActivity.kt

@@ -28,6 +28,7 @@ import kotlinx.serialization.json.Json
 import kotlinx.serialization.json.JsonConfiguration
 import xyz.quaver.hitomi.GalleryBlock
 import xyz.quaver.hitomi.getGalleryBlock
+import xyz.quaver.pupil.Pupil
 import xyz.quaver.pupil.R
 import xyz.quaver.pupil.adapters.ReaderAdapter
 import xyz.quaver.pupil.util.GalleryDownloader
@@ -46,6 +47,8 @@ class ReaderActivity : AppCompatActivity() {
     set(value) {
         field = value
 
+        (reader_recyclerview.adapter as ReaderAdapter).isFullScreen = value
+
         reader_progressbar.visibility = when {
             value -> View.VISIBLE
             else -> View.GONE