fix IPv6 and Unix domain sockets inheritance while online upgrade
diff --git a/src/core/ngx_connection.c b/src/core/ngx_connection.c
index 1f6a195..4a90b61 100644
--- a/src/core/ngx_connection.c
+++ b/src/core/ngx_connection.c
@@ -96,14 +96,12 @@
     ls = cycle->listening.elts;
     for (i = 0; i < cycle->listening.nelts; i++) {
 
-        /* AF_INET only */
-
-        ls[i].sockaddr = ngx_palloc(cycle->pool, sizeof(struct sockaddr_in));
+        ls[i].sockaddr = ngx_palloc(cycle->pool, NGX_SOCKADDRLEN);
         if (ls[i].sockaddr == NULL) {
             return NGX_ERROR;
         }
 
-        ls[i].socklen = sizeof(struct sockaddr_in);
+        ls[i].socklen = NGX_SOCKADDRLEN;
         if (getsockname(ls[i].fd, ls[i].sockaddr, &ls[i].socklen) == -1) {
             ngx_log_error(NGX_LOG_CRIT, cycle->log, ngx_socket_errno,
                           "getsockname() of the inherited "