style(*): style fix for plugin server and CHANGELOG.md

Add change log entry for #9173.

CHANGELOG.md

@@ -108,17 +108,21 @@
 
 #### Admin API
 
-- Increase the maximum request argument number from `100` to `1000`, and return 400 error if request parameters reach the limitation to avoid being truncated.
+- Increase the maximum request argument number from `100` to `1000`,
+  and return `400` error if request parameters reach the limitation to
+  avoid being truncated.
   [#9510](https://github.com/Kong/kong/pull/9510)
 
 #### PDK
 
-- Added support for `kong.request.get_uri_captures`(`kong.request.getUriCaptures`)
+- Added support for `kong.request.get_uri_captures`
+  (`kong.request.getUriCaptures`)
   [#9512](https://github.com/Kong/kong/pull/9512)
 
 #### Plugins
 
-- **AWS Lambda**: Fix an issue that is causing inability to read environment variables in ECS environment.
+- **AWS Lambda**: Fix an issue that is causing inability to
+  read environment variables in ECS environment.
   [#9460](https://github.com/Kong/kong/pull/9460)
 
 ### Dependencies
@@ -131,6 +135,10 @@
 
 #### Plugins
 
+- **Zipkin**: add `response_header_for_traceid` field in Zipkin plugin.
+  The plugin will set the corresponding header in the response
+  if the field is specified with a string value.
+  [#9173](https://github.com/Kong/kong/pull/9173)
 - **AWS Lambda**: add `requestContext` field into `awsgateway_compatible` input data
   [#9380](https://github.com/Kong/kong/pull/9380)
 

kong/runloop/plugin_servers/init.lua

@@ -4,8 +4,6 @@ local cjson = require "cjson.safe"
 local clone = require "table.clone"
 local ngx_ssl = require "ngx.ssl"
 local SIGTERM = 15
-local type = type
-local pairs = pairs
 
 local type = type
 local pairs = pairs
@@ -113,7 +111,7 @@ local exposed_api = {
     return header_value
   end,
 
-  ["kong.request.get_uri_captures"] = function ()
+  ["kong.request.get_uri_captures"] = function()
     local saved = get_saved()
     local ngx_ctx = saved and saved.ngx_ctx or ngx.ctx
     return kong.request.get_uri_captures(ngx_ctx)