The final line of the config file was not being read if there was

no \n at the end of it.  This was caused by apr_fgets returning
APR_EOF even though we had read valid data.  This is solved by
making cfg_getline check the buff that was returned from apr_fgets.
If apr_fgets return APR_EOF, but there was data in the buf, then we
return the buf, otherwise we return NULL.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@86643 13f79535-47bb-0310-9956-ffa450edef68