Scgi: do not push redundant NULL element into conf->params.

src/http/modules/ngx_http_scgi_module.c

diff --git a/src/http/modules/ngx_http_scgi_module.c b/src/http/modules/ngx_http_scgi_module.c
index ccbfd32..2c7a8af 100644
--- a/src/http/modules/ngx_http_scgi_module.c
+++ b/src/http/modules/ngx_http_scgi_module.c
@@ -1670,13 +1670,6 @@
 
     *code = (uintptr_t) NULL;
 
-    code = ngx_array_push_n(conf->params, sizeof(uintptr_t));
-    if (code == NULL) {
-        return NGX_ERROR;
-    }
-
-    *code = (uintptr_t) NULL;
-
     conf->header_params = headers_names.nelts;
 
     hash.hash = &conf->headers_hash;