Repeated attempts to kill the `mqjs -i` command using Ctrl+C, CPU load was too high.

[waruqi]

os: macOS

Even after pressing Ctrl+C multiple times, the process of mqjs -i still cannot be exited, and the CPU load increases to 99%, even though no JavaScript scripts are being executed.

$ mqjs -i
mqjs > (Press Ctrl-C again to quit).    <--- ctrl + c

$     <--- ctrl + c
$     <--- ctrl + c

PID    COMMAND      %CPU  TIME     #TH  #WQ  #POR MEM  PURG CMPR PGRP  PPID STATE   BOOSTS    %CPU_ME %CPU_OTHRS UID  FAUL COW
37951  mqjs         99.1  02:31.40 1/1  0    12   444K 0B   356K 37870 1    running *0[1]     0.00000 0.00000    501  353  62