Fixed "setfib=" on non-first listening socket.

src/http/ngx_http_core_module.c

diff --git a/src/http/ngx_http_core_module.c b/src/http/ngx_http_core_module.c
index d2e2913..4e5c78e 100644
--- a/src/http/ngx_http_core_module.c
+++ b/src/http/ngx_http_core_module.c
@@ -4015,6 +4015,8 @@
 #if (NGX_HAVE_SETFIB)
         if (ngx_strncmp(value[n].data, "setfib=", 7) == 0) {
             lsopt.setfib = ngx_atoi(value[n].data + 7, value[n].len - 7);
+            lsopt.set = 1;
+            lsopt.bind = 1;
 
             if (lsopt.setfib == NGX_ERROR) {
                 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,