Added LoaderUtil, which has unload.

Hmm, I'm not able to use unloadAndStop() yet.
Perhaps I need to grab an even newer version of the flex SDK,
so it's commented out for now.


git-svn-id: svn+ssh://src.earth.threerings.net/nenya/trunk@669 ed5b42cb-e716-0410-a449-f6a68f950b19

src/as/com/threerings/flash/LoaderUtil.as

@@ -0,0 +1,35 @@
+//
+// $Id$
+
+package com.threerings.flash {
+
+import flash.display.Loader;
+
+/**
+ * Contains a utility method for safely unloading a Loader.
+ */
+public class LoaderUtil
+{
+    /**
+     * Safely unload the specified loader.
+     */
+    public static function unload (loader :Loader) :void
+    {
+        try {
+            loader.close();
+        } catch (e1 :Error) {
+            // ignore
+        }
+//        try {
+//            loader.unloadAndStop();
+//        } catch (e2 :Error) {
+            // hmm, maybe they are using FP9 still
+            try {
+                loader.unload();
+            } catch (e3 :Error) {
+                // ignore
+            }
+//        }
+    }
+}
+}

src/as/com/threerings/flash/MediaContainer.as

@@ -328,16 +328,7 @@ public class MediaContainer extends Sprite
                 removeListeners(loader.contentLoaderInfo);
 
                 // dispose of media
-                try {
-                    loader.close();
-                } catch (ioe :IOError) {
-                    // ignore
-                }
-                try {
-                    loader.unload();
-                } catch (e :Error) {
-                    // ignore
-                }
+                LoaderUtil.unload(loader);
                 dispatchEvent(new Event(Event.UNLOAD));
 
                 removeChild(loader);