Prevent a segmentation fault when RLimit* directives used with only

one argument.

Submitted by: Ed Korthof
Reviewed by: Marc Slemko, Jim Jagielski, Dean Gaudet


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@77545 13f79535-47bb-0310-9956-ffa450edef68