commit 541771db1f520a75334dc10c21e13b228c1f23dd
author Sergey Kandaurov <pluknet@nginx.com> Tue Jan 26 12:39:28 2021 +0300
committer Sergey Kandaurov <pluknet@nginx.com> Tue Jan 26 12:39:28 2021 +0300
tree eefa2e71957afaef5f710626f35e6a5e690fd6d4
parent 722fd40f6513685a0ecf45445221351bb753f81d

Clean up trailers in ngx_http_clean_header() as well.

The function has not been updated with introduction of trailers support
in 7034:1b068a4e82d8 (1.13.2).

src/http/ngx_http_special_response.c

diff --git a/src/http/ngx_http_special_response.c b/src/http/ngx_http_special_response.c
index 76e6705..72f56fd 100644
--- a/src/http/ngx_http_special_response.c
+++ b/src/http/ngx_http_special_response.c
@@ -575,6 +575,10 @@
     r->headers_out.headers.part.next = NULL;
     r->headers_out.headers.last = &r->headers_out.headers.part;
 
+    r->headers_out.trailers.part.nelts = 0;
+    r->headers_out.trailers.part.next = NULL;
+    r->headers_out.trailers.last = &r->headers_out.trailers.part;
+
     r->headers_out.content_length_n = -1;
     r->headers_out.last_modified_time = -1;
 }