Thread.dumpStack() circumvents whatever logging is configured and writes

directly to stderr. Logging an exception with the associated warning does the
right thing and logs the stack trace via the logging system.


git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@5318 542714f4-19e9-0310-aa3c-eee0fc999fb1

src/java/com/threerings/presents/server/PresentsDObjectMgr.java

@@ -218,9 +218,8 @@ public class PresentsDObjectMgr
     public <T extends DObject> T registerObject (T object)
     {
         if (_dobjThread != null && !isDispatchThread()) {
-            log.warning("Registering DObject on non-dobject thread: " +
-                "[class=" + object.getClass().getName() + "]");
-            Thread.dumpStack();
+            log.warning("Registering DObject on non-dobject thread",
+                        "class", object.getClass().getName(), new Exception());
         }
 
         int oid = getNextOid();