Fix NPE

diff --git a/gwtquery-core/src/main/java/com/google/gwt/query/client/plugins/callbacks/Callbacks.java b/gwtquery-core/src/main/java/com/google/gwt/query/client/plugins/callbacks/Callbacks.java
index 9452d1171c3af7e58d87d7bfd5cee3d6884e166b..c7b4fb8837fd55d7fd634016f397686deb9167df 100644 (file)
--- a/gwtquery-core/src/main/java/com/google/gwt/query/client/plugins/callbacks/Callbacks.java
+++ b/gwtquery-core/src/main/java/com/google/gwt/query/client/plugins/callbacks/Callbacks.java
@@ -163,7 +163,7 @@ public class Callbacks {
   
   private void addAll(Object...o) {
     for (Object c : o) {
-      if (!done && (!opts.getUnique() || !stack.contains(c))) {
+      if (!done && c != null && (!opts.getUnique() || !stack.contains(c))) {
         stack.add(c);
       }
       // In jQuery add always is run when memory is true even when unique is set