Prevent mod_proxy from truncating one character off the

end of the status line returned from the proxied server.
Note that buffer is NULL terminated by the call to
ap_proxy_string_read() so there is no need to terminate it
again.

Submitted by:	Adam Sussman
Reviewed by:	Bill Stoddard


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@92692 13f79535-47bb-0310-9956-ffa450edef68