RTEMS | cpukit/libblock: Fix resource leak in rtems_fdisk_initialize (!903)

[MITHILESH MATTAPALLI (@mithileshm)]

MITHILESH MATTAPALLI commented on a discussion on cpukit/libblock/src/flashdisk.c: https://gitlab.rtems.org/rtems/rtos/rtems/-/merge_requests/903#note_145330

 >   */
 > +static void rtems_fdisk_cleanup_resources(
 > +  rtems_flashdisk *fds,
 > +  uint32_t         minor,
 > +  rtems_flashdisk *fd
 > +)
 > +{
 > +  uint32_t i;
 > +
 > +  for ( i = 0; i < minor; i++ ) {
 > +    rtems_flashdisk *p = &fds[ i ];
 > +    uint32_t         d;
 > +    char             clean_name[] = RTEMS_FLASHDISK_DEVICE_BASE_NAME "a";
 > +
 > +    clean_name[ sizeof( RTEMS_FLASHDISK_DEVICE_BASE_NAME ) - 1 ] += i;
 > +    unlink( clean_name );

This cleans up the `/dev/fdisk*` nodes registered in the earlier successful loop iterations so we don't leave dangling pointers when `fds` is freed

-- 
View it on GitLab: https://gitlab.rtems.org/rtems/rtos/rtems/-/merge_requests/903#note_145330
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