[FIXED JENKINS-21183] Updated XStream to pick up NPE fix.

changelog.html

@@ -61,6 +61,9 @@ Upcoming changes</a>
   <li class=bug>
     When clicking <i>Apply</i> to rename a job, tell the user that <i>Save</i> must be used instead.
     (<a href="https://issues.jenkins-ci.org/browse/JENKINS-17401">issue 17401</a>)
+  <li class="major bug">
+    Exception from XStream running Maven builds on strange Java versions.
+    (<a href="https://issues.jenkins-ci.org/browse/JENKINS-21183">issue 21183</a>)
   <li class=bug>
     When clicking <i>Apply</i> results in an exception (error page), show it, rather than creating an empty dialog.
     (<a href="https://issues.jenkins-ci.org/browse/JENKINS-20772">issue 20772</a>)

core/pom.xml

@@ -219,7 +219,7 @@ THE SOFTWARE.
     <dependency>
       <groupId>org.jvnet.hudson</groupId>
       <artifactId>xstream</artifactId>
-      <version>1.4.4-jenkins-4</version>
+      <version>1.4.4-jenkins-5</version>
     </dependency>
     <dependency>
       <groupId>jfree</groupId>