fix: free parser when detaching

Author: ronag

lib/core/client.js

@@ -651,6 +651,11 @@ class Parser extends HTTPParser {
       resume(client)
     }
   }
+
+  destroy () {
+    this.unconsume()
+    setImmediate((self) => self.close(), this)
+  }
 }
 
 function onSocketConnect () {
@@ -705,8 +710,7 @@ function onSocketClose () {
 
   client[kSocket] = null
 
-  parser.unconsume()
-  setImmediate(() => parser.close())
+  parser.destroy()
 
   if (err.code !== 'UND_ERR_INFO') {
     // Evict session on errors.
@@ -744,10 +748,11 @@ function onSocketSession (session) {
 }
 
 function detachSocket (socket) {
+  socket[kParser].destroy()
+  socket[kParser] = null
   socket[kPause] = null
   socket[kResume] = null
   socket[kClient] = null
-  socket[kParser] = null
   socket[kError] = null
   socket
     .removeListener('timeout', onSocketTimeout)