Added fail-safe

app/src/main/java/eu/faircode/email/ImageHelper.java

@@ -872,11 +872,14 @@ class ImageHelper {
         if (Build.VERSION.SDK_INT < Build.VERSION_CODES.P)
             return drawable;
 
-        if (drawable instanceof AnimatedImageDrawable) {
+        if (drawable instanceof AnimatedImageDrawable)
+            try {
                 SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
                 boolean animate_images = prefs.getBoolean("animate_images", true);
                 if (animate_images)
                     ((AnimatedImageDrawable) drawable).start();
+            } catch (Throwable ex) {
+                Log.e(ex);
             }
 
         return drawable;