Eliminate a very ugly race - the parallel starting threads were picking
  up thread identifiers other than their own.  Because the limit of threads
  is an int, stuffing the int into the void* value is a safe argument
  convention.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@123899 13f79535-47bb-0310-9956-ffa450edef68