Change ap_get_brigade prototype to remove *readbytes in favor of readbytes.

If you need the length, you should be using apr_brigade_length.  This is
much more consistent.  Of all the places that call ap_get_brigade, only
one (ap_http_filter) needs the length.  This makes it now possible to
pass constants down without assigning them to a temporary variable first.

Also:
- Change proxy_ftp to use EXHAUSTIVE mode (didn't catch its -1 before)
- Fix buglet in mod_ssl that would cause it to return too much data in
  some circumstances


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@93014 13f79535-47bb-0310-9956-ffa450edef68

modules/proxy/proxy_util.c

@@ -1014,12 +1014,11 @@ PROXY_DECLARE(apr_status_t) ap_proxy_string_read(conn_rec *c, apr_bucket_brigade
 
     /* loop through each brigade */
     while (!found) {
-        apr_off_t zero = 0;
         /* get brigade from network one line at a time */
         if (APR_SUCCESS != (rv = ap_get_brigade(c->input_filters, bb, 
                                                 AP_MODE_GETLINE,
                                                 APR_BLOCK_READ,
-                                                &zero /* readline */))) {
+                                                0))) {
             return rv;
         }
         /* loop through each bucket */