The function apreq_param_make() will return NULL on failure. However
NULL check are forgetten before derenference, which could lead to
NULL pointer dereference.
Adding NULL check to all use of apreq_param_make().
Submitted by: Zhou Qingyang <zhou1615@umn.edu>
Github: closes#303
git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1908981 13f79535-47bb-0310-9956-ffa450edef68
o relocate srclib/libapreq/library/*.c -> server/apreq_${f}.c
o relocate srclib/libapreq/include/*.h -> include/*.h
o remove apreq_version.[hc] related stuff since its nolonger its own lib
o connect modules/apreq to the build under 'most' default comment out in httpd.conf
o update make_exports.awk to handle APREQ marcos
git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1201372 13f79535-47bb-0310-9956-ffa450edef68
