rewrite_phase_handler

diff -p -r -U 8 a/src/http/ngx_http_core_module.c b/src/http/ngx_http_core_module.c
--- a/src/http/ngx_http_core_module.c	2010-09-02 15:02:57.000000000 +0100
+++ b/src/http/ngx_http_core_module.c	2010-09-18 22:18:01.000000000 +0100
@@ -905,16 +905,20 @@ ngx_http_core_rewrite_phase(ngx_http_req
 
     rc = ph->handler(r);
 
     if (rc == NGX_DECLINED) {
         r->phase_handler++;
         return NGX_AGAIN;
     }
 
+    if (rc == NGX_AGAIN || rc == NGX_DONE) {
+        return NGX_OK;
+    }
+
     /* rc == NGX_OK || rc == NGX_ERROR || rc == NGX_HTTP_...  */
 
     ngx_http_finalize_request(r, rc);
 
     return NGX_OK;
 }