Implement hashCode() to match equals(), fixing a checkstyle violation.

Review by: jgw



git-svn-id: https://google-web-toolkit.googlecode.com/svn/trunk@5289 8db76d5a-ed1c-0410-87a9-c151d255dfc7
diff --git a/user/src/com/google/gwt/xml/client/impl/DOMItem.java b/user/src/com/google/gwt/xml/client/impl/DOMItem.java
index df16f26..c72599a 100644
--- a/user/src/com/google/gwt/xml/client/impl/DOMItem.java
+++ b/user/src/com/google/gwt/xml/client/impl/DOMItem.java
@@ -42,6 +42,13 @@
     }
     return false;
   }
+  
+  /**
+   * Returns the hash code for this DOMItem.
+   */
+  public int hashCode() {
+    return jsObject.hashCode();
+  }
 
   JavaScriptObject getJsObject() {
     return jsObject;