Prevent double pEp text

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

@@ -98,6 +98,12 @@ public interface DaoAttachment {
             " AND (NOT (error IS :error) OR progress IS NOT NULL OR NOT (available IS 0))")
     void setError(long id, String error);
 
+    @Query("UPDATE attachment" +
+            " SET type = :type" +
+            " WHERE id = :id" +
+            " AND NOT (type IS :type)")
+    void setType(long id, String type);
+
     @Query("UPDATE attachment" +
             " SET disposition = :disposition" +
             " WHERE id = :id" +

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

@@ -6983,6 +6983,8 @@ public class FragmentMessages extends FragmentBase implements SharedPreferences.
                             }
 
                             Helper.writeText(message.getFile(context), html);
+
+                            db.attachment().setType(remote.id, "application/octet-stream");
                         }
                     }