http2: remove unnecessary bind from setImmediate

PR-URL: #28131
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>

lib/internal/http2/core.js

@@ -2152,12 +2152,16 @@ class Http2Stream extends Duplex {
         // By using setImmediate we allow pushStreams to make it through
         // before the stream is officially closed. This prevents a bug
         // in most browsers where those pushStreams would be rejected.
-        setImmediate(this.close.bind(this));
+        setImmediate(callStreamClose, this);
       }
     }
   }
 }
 
+function callStreamClose(stream) {
+  stream.close();
+}
+
 function processHeaders(oldHeaders) {
   assertIsObject(oldHeaders, 'headers');
   const headers = ObjectCreate(null);