Fix VM memory allocation optimizations by reducing what we allocate on the heap

internal/builtins/accept.go

@@ -21,12 +21,12 @@ func Accept(args ...object.Object) object.Object {
 		err error
 	)
 
-	fd := int(args[0].(*object.Integer).Value)
+	fd := int(args[0].(object.Integer).Value)
 
 	nfd, _, err = syscall.Accept(fd)
 	if err != nil {
 		return newError("SocketError: %s", err)
 	}
 
-	return &object.Integer{Value: int64(nfd)}
+	return object.Integer{Value: int64(nfd)}
 }