Fixed app crashing when thumbnail is null

app/build.gradle

@@ -38,7 +38,7 @@ android {
         minSdkVersion 16
         targetSdkVersion 30
         versionCode 61
-        versionName "5.1.1-hotfix1"
+        versionName "5.1.1-hotfix2"
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
         vectorDrawables.useSupportLibrary = true
     }

app/src/main/java/xyz/quaver/pupil/adapters/GalleryBlockAdapter.kt

@@ -20,6 +20,7 @@ package xyz.quaver.pupil.adapters
 
 import android.content.Context
 import android.graphics.drawable.Drawable
+import android.net.Uri
 import android.util.SparseBooleanArray
 import android.view.LayoutInflater
 import android.view.View
@@ -157,7 +158,7 @@ class GalleryBlockAdapter(private val galleries: List<Int>) : RecyclerSwipeAdapt
                     })
                     ssiv?.recycle()
                     CoroutineScope(Dispatchers.IO).launch {
-                        showImage(cache.getThumbnail())
+                        showImage(cache.getThumbnail() ?: Uri.EMPTY)
                     }
                 }