Whoops, I forget to actually THROW the exception!

git-svn-id: https://google-web-toolkit.googlecode.com/svn/trunk@581 8db76d5a-ed1c-0410-87a9-c151d255dfc7
diff --git a/dev/core/src/com/google/gwt/dev/jjs/impl/TypeMap.java b/dev/core/src/com/google/gwt/dev/jjs/impl/TypeMap.java
index 27ae042..aadbc1c 100644
--- a/dev/core/src/com/google/gwt/dev/jjs/impl/TypeMap.java
+++ b/dev/core/src/com/google/gwt/dev/jjs/impl/TypeMap.java
@@ -52,6 +52,7 @@
       InternalCompilerException ice = new InternalCompilerException(
           "Failed to get JNode");
       ice.addNode(binding.getClass().getName(), binding.toString(), null);
+      throw ice;
     }
     return result;
   }