[nginx] gRPC: RST_STREAM(NO_ERROR) handling micro-optimization.

[Sergey Kandaurov]

details:   https://hg.nginx.org/nginx/rev/0302a4f0b6c4
branches:  
changeset: 7873:0302a4f0b6c4
user:      Sergey Kandaurov <pluknet at nginx.com>
date:      Thu Jun 17 11:44:06 2021 +0300
description:
gRPC: RST_STREAM(NO_ERROR) handling micro-optimization.

After 2096b21fcd10, a single RST_STREAM(NO_ERROR) may not result in an error.
This change removes several unnecessary ctx->type checks for such a case.

diffstat:

 src/http/modules/ngx_http_grpc_module.c |  4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diffs (21 lines):

diff -r 021416fca094 -r 0302a4f0b6c4 src/http/modules/ngx_http_grpc_module.c
--- a/src/http/modules/ngx_http_grpc_module.c	Thu Jun 17 11:43:55 2021 +0300
+++ b/src/http/modules/ngx_http_grpc_module.c	Thu Jun 17 11:44:06 2021 +0300
@@ -2177,6 +2177,8 @@ ngx_http_grpc_filter(void *data, ssize_t
             }
 
             ctx->rst = 1;
+
+            continue;
         }
 
         if (ctx->type == NGX_HTTP_V2_GOAWAY_FRAME) {
@@ -3484,6 +3486,8 @@ ngx_http_grpc_parse_rst_stream(ngx_http_
         return NGX_AGAIN;
     }
 
+    ctx->state = ngx_http_grpc_st_start;
+
     return NGX_OK;
 }