LU-15125 o2iblnd: wrong list used for kib_connd_waits

LU-15125 o2iblnd: wrong list used for kib_connd_waits

The ibc_list field of struct kib_conn is used for the kib_connd_waits
list, but kiblnd_connd() uses ibc_sched_list in the
list_first_entry_or_null macro.

Test-Parameters: trivial
Fixes: 34b57a6f8f ("LU-12678 lnet: use list_first_entry() in lnet/klnds subdirectory.")
Signed-off-by: Chris Horn <chris.horn@hpe.com>
Change-Id: I0cc8a94636a5129956c53e48ae96b27ece5f0228
Reviewed-on: https://review.whamcloud.com/45316
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: James Simmons <jsimmons@infradead.org>
Reviewed-by: Alexey Lyashkov <alexey.lyashkov@hpe.com>
Reviewed-by: Serguei Smirnov <ssmirnov@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>