LU-12678 lnet: change list_for_each in ksocknal_debug_peerhash

LU-12678 lnet: change list_for_each in ksocknal_debug_peerhash

This list_for_each() loop searches for a particular entry,
then acts of in.  It currently acts after the loop by testing
if the variable is NULL.  When we convert to list_for_each_entry()
it won't be NULL.

Change the code so the acting happens inside the loop.
 list_for_each_entry() {
    if (this isn't it)
        continue;
    act on entry;
    goto done; // break out of 2 loops
}

Note that identing is deliberately left unchanged,
as the next patch will change the 2 loops to a single loop,
after which the current indents will be correct.

Signed-off-by: Mr NeilBrown <neilb@suse.de>
Change-Id: Idea32bf2ab4037650d6698d4f82f6b6764b4d1b2
Reviewed-on: https://review.whamcloud.com/36836
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Amir Shehata <ashehata@whamcloud.com>
Reviewed-by: James Simmons <jsimmons@infradead.org>
Reviewed-by: Oleg Drokin <green@whamcloud.com>