lib: fix a few minor issues flagged by lgtm

* Confusing (but correct) regex using `A-z` character range by
  accident
* Add the status argument to afterShutdown

PR-URL: #25873
Reviewed-By: Refael Ackermann <refack@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Sam Roberts <vieuxtech@gmail.com>

Author: rneatherway

lib/internal/http2/core.js

@@ -1518,7 +1518,8 @@ function streamOnPause() {
     this[kHandle].readStop();
 }
 
-function afterShutdown() {
+function afterShutdown(status) {
+  // Currently this status value is unused
   this.callback();
   const stream = this.handle[kOwner];
   if (stream)

tools/cpplint.py

@@ -636,7 +636,7 @@ def GetNonHeaderExtensions():
 
 _RIGHT_LEANING_POINTER_PATTERN = re.compile(r'[^=|(,\s><);&?:}]'
                                             r'(?<!(sizeof|return))'
-                                            r'\s\*[a-zA-z_][0-9a-zA-z_]*')
+                                            r'\s\*[a-zA-Z_][0-9a-zA-Z_]*')
 
 _regexp_compile_cache = {}