bugfix: init_worker_by_lua*: memory corruptions would happen when no server {} is defined in nginx.conf. this regression had appeared in v0.9.11.

Author: agentzh

src/ngx_http_lua_initworkerby.c

@@ -83,20 +83,20 @@ ngx_http_lua_init_worker(ngx_cycle_t *cycle)
 #endif
 
     ngx_array_init(&fake_cycle->listening, cycle->pool,
-                   cycle->listening.nelts,
+                   cycle->listening.nelts || 1,
                    sizeof(ngx_listening_t));
 
 #if defined(nginx_version) && nginx_version >= 1003007
 
-    ngx_array_init(&fake_cycle->paths, cycle->pool, cycle->paths.nelts,
+    ngx_array_init(&fake_cycle->paths, cycle->pool, cycle->paths.nelts || 1,
                    sizeof(ngx_path_t *));
 
 #endif
 
     part = &cycle->open_files.part;
     ofile = part->elts;
 
-    if (ngx_list_init(&fake_cycle->open_files, cycle->pool, part->nelts,
+    if (ngx_list_init(&fake_cycle->open_files, cycle->pool, part->nelts || 1,
                       sizeof(ngx_open_file_t))
         != NGX_OK)
     {