Prevent crash

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

@@ -270,6 +270,7 @@ public class ActivitySignature extends ActivityBase {
     }
 
     private void onImageSelected(Uri uri) {
+        try {
             getContentResolver().takePersistableUriPermission(uri, Intent.FLAG_GRANT_READ_URI_PERMISSION);
 
             int start = etText.getSelectionStart();
@@ -279,6 +280,9 @@ public class ActivitySignature extends ActivityBase {
             ssb.setSpan(is, start, start + 1, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
             etText.setText(ssb);
             etText.setSelection(start + 1);
+        } catch (Throwable ex) {
+            Log.unexpectedError(getSupportFragmentManager(), ex);
+        }
     }
 
     static Drawable getDrawableByUri(Context context, Uri uri) {