bugfix: fixed size of the array when initialized in the init_worker_by* phase. (#2017)

Author: xiaocang

src/ngx_http_lua_initworkerby.c

@@ -118,14 +118,15 @@ ngx_http_lua_init_worker(ngx_cycle_t *cycle)
  ngx_queue_init(&fake_cycle->reusable_connections_queue);
 
  if (ngx_array_init(&fake_cycle->listening, cycle->pool,
- cycle->listening.nelts || 1,
+ cycle->listening.nelts ? cycle->listening.nelts : 1,
  sizeof(ngx_listening_t))
  != NGX_OK)
  {
  goto failed;
  }
 
- if (ngx_array_init(&fake_cycle->paths, cycle->pool, cycle->paths.nelts || 1,
+ if (ngx_array_init(&fake_cycle->paths, cycle->pool,
+ cycle->paths.nelts ? cycle->paths.nelts : 1,
  sizeof(ngx_path_t *))
  != NGX_OK)
  {
@@ -135,7 +136,8 @@ ngx_http_lua_init_worker(ngx_cycle_t *cycle)
  part = &cycle->open_files.part;
  ofile = part->elts;
 
- if (ngx_list_init(&fake_cycle->open_files, cycle->pool, part->nelts || 1,
+ if (ngx_list_init(&fake_cycle->open_files, cycle->pool,
+ part->nelts ? part->nelts : 1,
  sizeof(ngx_open_file_t))
  != NGX_OK)
  {