reapplying a fix for '\' in SVN user name issue.

git-svn-id: https://hudson.dev.java.net/svn/hudson/trunk/hudson/main@1361 71c3de6d-444a-0410-be80-ed276b4c234a

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

@@ -128,6 +128,8 @@ public class User extends AbstractModelObject {
     public static User get(String name) {
         if(name==null)
             return null;
+        name = name.replace('\\', '_').replace('/', '_');
+        
         synchronized(byName) {
             User u = byName.get(name);
             if(u==null) {
@@ -175,7 +177,6 @@ public class User extends AbstractModelObject {
      * The file we save our configuration.
      */
     protected final XmlFile getConfigFile() {
-        String safeId = id.replace('\\', '_').replace('/', '_');
         return new XmlFile(XSTREAM,new File(Hudson.getInstance().getRootDir(),"users/"+ safeId +"/config.xml"));
     }