Perform null checking for JM-1463

git-svn-id: http://svn.igniterealtime.org/svn/repos/openfire/trunk@11019 b35dd754-fafc-0310-a699-88a17e54d16e

src/plugins/userservice/src/java/org/jivesoftware/openfire/plugin/UserServicePlugin.java

@@ -100,9 +100,9 @@ public class UserServicePlugin implements Plugin, PropertyEventListener {
             throws UserNotFoundException
     {
         User user = getUser(username);
-        user.setPassword(password);
-        user.setName(name);
-        user.setEmail(email);
+        if (password != null) user.setPassword(password);
+        if (name != null) user.setName(name);
+        if (email != null) user.setEmail(email);
 
         if (groupNames != null) {
             Collection<Group> newGroups = new ArrayList<Group>();
@@ -233,4 +233,4 @@ public class UserServicePlugin implements Plugin, PropertyEventListener {
     public void xmlPropertyDeleted(String property, Map<String, Object> params) {
         // Do nothing
     }
-}
\ No newline at end of file
+}