From a0b0b5a63b7aafd034aa215e7174653a59f8d7c8 Mon Sep 17 00:00:00 2001
From: damencho <damencho@jitsi.org>
Date: Fri, 27 Oct 2017 13:14:50 -0500
Subject: [PATCH] Makes xmpperror descriptive text optional as said in the rfc.

---
 .../java/org/jivesoftware/smack/packet/XMPPError.java  | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/smack-core/src/main/java/org/jivesoftware/smack/packet/XMPPError.java b/smack-core/src/main/java/org/jivesoftware/smack/packet/XMPPError.java
index 54d40a47a..b1b2d07e9 100644
--- a/smack-core/src/main/java/org/jivesoftware/smack/packet/XMPPError.java
+++ b/smack-core/src/main/java/org/jivesoftware/smack/packet/XMPPError.java
@@ -271,9 +271,13 @@ public class XMPPError extends AbstractError {
     }
 
     public static XMPPError.Builder from(Condition condition, String descriptiveText) {
-        Map<String, String> descriptiveTexts = new HashMap<String, String>();
-        descriptiveTexts.put("en", descriptiveText);
-        return getBuilder().setCondition(condition).setDescriptiveTexts(descriptiveTexts);
+        XMPPError.Builder builder = getBuilder().setCondition(condition);
+        if (descriptiveText != null) {
+            Map<String, String> descriptiveTexts = new HashMap<>();
+            descriptiveTexts.put("en", descriptiveText);
+            builder.setDescriptiveTexts(descriptiveTexts);
+        }
+        return builder;
     }
 
     public static Builder getBuilder() {