Add missing argument

Log format specified two placeholders,
while just one argument was provided.

Signed-off-by: Piotrek Zygielo <piotr@zygielo.pl>
diff --git a/nucleus/core/kernel/src/main/java/com/sun/enterprise/v3/services/impl/ContainerMapper.java b/nucleus/core/kernel/src/main/java/com/sun/enterprise/v3/services/impl/ContainerMapper.java
index eef7e75..fb87897 100644
--- a/nucleus/core/kernel/src/main/java/com/sun/enterprise/v3/services/impl/ContainerMapper.java
+++ b/nucleus/core/kernel/src/main/java/com/sun/enterprise/v3/services/impl/ContainerMapper.java
@@ -389,7 +389,8 @@
 
     public void register(final Endpoint endpoint) {
         if (LOGGER.isLoggable(Level.FINE)) {
-            LOGGER.log(Level.FINE, "MAPPER({0}) REGISTER endpoint: {1}", endpoint);
+            LOGGER.log(Level.FINE, "MAPPER({0}) REGISTER endpoint: {1}",
+                    new Object[]{this, endpoint});
         }
 
         mapMultipleAdapter = true;