Fix mod_deflate NetWare build.

Backport of r1363589 from trunk.

Submitted by: normw gknw net.
Reviewed by: fuankg
Backported by: rjung


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1364260 13f79535-47bb-0310-9956-ffa450edef68