If there's an array of an interface that implements Streamable on a Streamable, we created a Streamer for it. We throw a RuntimeException when we don't find a constructor, so skip our init in creating Streamers for interfaces

git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@6561 542714f4-19e9-0310-aa3c-eee0fc999fb1

src/main/java/com/threerings/io/Streamer.java

@@ -325,6 +325,9 @@ public abstract class Streamer
         protected ClassStreamer (Class<?> target)
         {
             _target = target;
+            if (_target.isInterface()) {
+                return;// Don't try to find a constructor if we don't have one
+            }
             initConstructor();
             initMarshallers();
         }