don't pass uninitialized rv passed to ap_log_rerror()

  (rv wasn't interesting / follow an existing example)

stop throwing away a pointer on the heap

(clang scan-build)


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1534892 13f79535-47bb-0310-9956-ffa450edef68