fix: adding try-resources for stream

Author: tryflaviosantos

src/main/java/br/com/swconsultoria/nfe/Assinar.java

@@ -157,19 +157,16 @@ private static void loadCertificates(ConfiguracoesNfe config, XMLSignatureFactor
 
     private static String outputXML(Document doc) throws NfeException {
 
-        try {
-            ByteArrayOutputStream os = new ByteArrayOutputStream();
+        try (ByteArrayOutputStream os = new ByteArrayOutputStream()){
             TransformerFactory tf = TransformerFactory.newInstance();
             Transformer trans = tf.newTransformer();
             trans.transform(new DOMSource(doc), new StreamResult(os));
             String xml = os.toString();
             xml = xml.replaceAll("\\r\\n", "");
             xml = xml.replaceAll(" standalone=\"no\"", "");
             return xml;
-        } catch (TransformerException e) {
-            throw new NfeException("Erro ao Transformar Documento:" + e.getMessage());
+        } catch (TransformerException | IOException e) {
+            throw new NfeException("Erro ao Transformar Documento:" + e.getMessage(),e);
         }
-
     }
-
 }