Patch to fix incomplete file writing in uxn file device

flush.patch

 Uint16
 file_write(void *src, Uint16 len, Uint8 flags)
 {
+       /* If we're not already writing then re-open the file */
        if(state != FILE_WRITE) {
                reset();
                if((f = fopen(current_filename, (flags & 0x01) ? "ab" : "wb")) != NULL)
                        state = FILE_WRITE;
        }
-       if(state == FILE_WRITE)
-               return fwrite(src, 1, len, f);
+
+       size_t bytes_written;
+       if(state == FILE_WRITE) {
+               bytes_written = fwrite(src, 1, len, f);
+               fflush(f);
+               return bytes_written;
+       }
+
        return 0;
 }