[PATCH 1 of 2] Fixed throughput problems with large limit_rate

[Maxim Dounin]

# HG changeset patch
# User Maxim Dounin <mdounin at mdounin.ru>
# Date 1324314500 -10800
# Node ID 77a59d0863ef59a5ddce4322d94b325a923a7624
# Parent  52194af4217ad48e290058ba133e3cbf74b2d28f
Fixed throughput problems with large limit_rate.

Previous attempt to fix this was in r1658 (0.6.18), though that one wasn't
enough (it was a noop).

diff --git a/src/http/ngx_http_write_filter_module.c b/src/http/ngx_http_write_filter_module.c
--- a/src/http/ngx_http_write_filter_module.c
+++ b/src/http/ngx_http_write_filter_module.c
@@ -262,7 +262,7 @@ ngx_http_write_filter(ngx_http_request_t
             }
         }
 
-        delay = (ngx_msec_t) ((nsent - sent) * 1000 / r->limit_rate + 1);
+        delay = (ngx_msec_t) ((nsent - sent) * 1000 / r->limit_rate);
 
         if (delay > 0) {
             c->write->delayed = 1;