Fix use of raw type.

git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@5550 542714f4-19e9-0310-aa3c-eee0fc999fb1

src/java/com/threerings/io/BasicStreamers.java

@@ -241,7 +241,7 @@ public class BasicStreamers
         public void writeObject (Object object, ObjectOutputStream out, boolean useWriter)
             throws IOException
         {
-            out.writeClassMapping((Class)object);
+            out.writeClassMapping((Class<?>)object);
         }
     }