Small fix

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

@@ -127,6 +127,7 @@ public class ActivityEml extends ActivityBase {
                     result.parts = HtmlHelper.fromHtml(sb.toString());
 
                     result.html = parts.getHtml(context);
+                    if (result.html != null)
                         result.body = HtmlHelper.fromHtml(HtmlHelper.sanitize(context, result.html));
 
                     ByteArrayOutputStream bos = new ByteArrayOutputStream();