Merge "MiniThumbFile: Fix image/bitmap retrieval" into cm-10.2

        RandomAccessFile r = miniThumbDataFile();

        if (r == null) return null;

        long pos = id * BYTES_PER_MINTHUMB;

        long pos = getIndex(id, false);

        if(pos < 0) return null;

        pos *= BYTES_PER_MINTHUMB;

        FileLock lock = null;

        try {

            mBuffer.clear();