fix a syntax error in an initializer which prevented http_main.c from

compiling on at least OS/390, AIX w/ xlc, and HP-UX with HP compiler;
Tru64 cc previously complained but generated code anyway; gcc -Wall
didn't complain before

unfortunately, this introduces a warning with gcc -Wall on Solaris since
in_addr is a union


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@92863 13f79535-47bb-0310-9956-ffa450edef68