clean up some unneeded pstrdup()s in calls to table_* functions

Reviewed by:	Marc Slemko, Paul Sutton, Ralf S. Engelschall


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@79877 13f79535-47bb-0310-9956-ffa450edef68