6732461: broken message file for annotation processing

Regression in sqe test introduced in 6720185

Reviewed-by: jjg
diff --git a/langtools/src/share/classes/com/sun/tools/apt/util/Bark.java b/langtools/src/share/classes/com/sun/tools/apt/util/Bark.java
index 14dfa83..4246072 100644
--- a/langtools/src/share/classes/com/sun/tools/apt/util/Bark.java
+++ b/langtools/src/share/classes/com/sun/tools/apt/util/Bark.java
@@ -87,7 +87,7 @@
         context.put(barkKey, this);
 
         // register additional resource bundle for APT messages.
-        Messages aptMessages = new Messages(Messages.getDefaultBundle());
+        Messages aptMessages = Messages.instance(context);
         aptMessages.add("com.sun.tools.apt.resources.apt");
         aptDiags = new JCDiagnostic.Factory(aptMessages, "apt");