The complete source tree passes "gcc .. -Wnested-externs .." quietly except

for this this support program. Make it pass -Wnested-externs, too.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@81380 13f79535-47bb-0310-9956-ffa450edef68