Fix a problem displaying status when a threaded MPM is used.

Fix a problem displaying status when a threaded MPM is used.

The line

   int indx = (i * HARD_THREAD_LIMIT) + j;

in the vicinity of the change was bad; k needed to be added
instead of j.

I swapped the use of j and k in this section so that i and j
had the same meaning as in an earlier nested loop.  I suspect
that the difference in meaning is what led to the bug.

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@88397 13f79535-47bb-0310-9956-ffa450edef68