Prevent crash

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

@@ -523,10 +523,10 @@ public class HtmlHelper {
         boolean inline = prefs.getBoolean("inline_images", false);
 
         final int px = Helper.dp2pixels(context, (zoom + 1) * 24);
-
         final Resources.Theme theme = context.getTheme();
         final Resources res = context.getResources();
 
+        try {
             final AnnotatedSource a = new AnnotatedSource(source);
 
             if (TextUtils.isEmpty(a.source)) {
@@ -739,6 +739,13 @@ public class HtmlHelper {
             });
 
             return lld;
+        } catch (Throwable ex) {
+            Log.e(ex);
+
+            Drawable d = res.getDrawable(R.drawable.baseline_broken_image_24, theme);
+            d.setBounds(0, 0, px, px);
+            return d;
+        }
     }
 
     private static void fitDrawable(Drawable d, AnnotatedSource a, View view) {
@@ -787,7 +794,7 @@ public class HtmlHelper {
         return d;
     }
 
-    static private Drawable getCachedImage(Context context, File file) {
+    private static Drawable getCachedImage(Context context, File file) {
         if (file.exists()) {
             Log.i("Using cached " + file);
             Bitmap bm = BitmapFactory.decodeFile(file.getAbsolutePath());