StringBuffer -> StringBuilder.

git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@4191 542714f4-19e9-0310-aa3c-eee0fc999fb1

src/java/com/threerings/presents/net/UsernamePasswordCreds.java

@@ -1,5 +1,5 @@
 //
-// $Id: UsernamePasswordCreds.java,v 1.14 2004/08/27 02:20:22 mdb Exp $
+// $Id$
 //
 // Narya library - tools for developing networked games
 // Copyright (C) 2002-2004 Three Rings Design, Inc., All Rights Reserved
@@ -66,7 +66,7 @@ public class UsernamePasswordCreds extends Credentials
     }
 
     // documentation inherited
-    protected void toString (StringBuffer buf)
+    protected void toString (StringBuilder buf)
     {
         super.toString(buf);
         buf.append(", password=").append(_password);