[FIXED JENKINS-15889] Saving the update center list after the metadata has...

[FIXED JENKINS-15889] Saving the update center list after the metadata has been fetched results in the metadata being persisted twice

changelog.html

@@ -55,7 +55,10 @@ Upcoming changes</a>
 <!-- Record your changes in the trunk here. -->
 <div id="trunk" style="display:none"><!--=TRUNK-BEGIN=-->
 <ul class=image>
-  <li class=>
+  <li class=bug>
+    Saving the update center list after the metadata has been fetched results in 
+    the metadata being persisted twice
+    (<a href="https://issues.jenkins-ci.org/browse/JENKINS-15889">issue 15889</a>)
 </ul>
 </div><!--=TRUNK-END=-->
 
@@ -133,8 +136,6 @@ Upcoming changes</a>
   <li class=bug>
     "Disable Project" button breaks Free style project pages.
     (<a href="https://issues.jenkins-ci.org/browse/JENKINS-15887">issue 15887</a>)
-    
-
 </ul>
 <h3><a name=v1.491>What's new in 1.491</a> (2012/11/18)</h3>
 <ul class=image>

core/src/main/java/hudson/model/UpdateSite.java

@@ -106,7 +106,7 @@ public class UpdateSite {
     /**
      * Latest data as read from the data file.
      */
-    private Data data;
+    private transient Data data;
 
     /**
      * ID string for this update source.