use real weight, do not downground to one

src/http/ngx_http_upstream_round_robin.c

diff --git a/src/http/ngx_http_upstream_round_robin.c b/src/http/ngx_http_upstream_round_robin.c
index 6b612b6..0b3a709 100644
--- a/src/http/ngx_http_upstream_round_robin.c
+++ b/src/http/ngx_http_upstream_round_robin.c
@@ -511,13 +511,7 @@
         }
 
         for (i = 0; i < peers->number; i++) {
-            if (peer[i].max_fails == 0 || peer[i].fails < peer[i].max_fails) {
-                peer[i].current_weight += peer[i].weight;
-
-            } else {
-                /* 1 allows to go to quick recovery when all peers failed */
-                peer[i].current_weight = 1;
-            }
+            peer[i].current_weight += peer[i].weight;
         }
     }
 }