run out of memory while repeat save and load process

[calais007]

I think it exist a memory leak issue in UmdIsoReader.java,
There are two containers that named
private HashMap<String, Iso9660File> fileCache = new HashMap<String, Iso9660File>();

and

private HashMap<String, Iso9660Directory> dirCache = new HashMap<String, Iso9660Directory>();

I have reviewed this file and I just see that jpcsp ONLY do add item into container but without remove the added item, in my debugging, every time JPCSP read a file from UMD (e.g, in Game NOW Loading), then memory usage space increased, Java GC never free a reference that still in container. Maybe JPCSP should remove the unused items from container to prevent memory leak.

Sorry for my bad English