Server crashing when rcon command gmx is used before new NPC is disconnected

[ddanyk]

Describe the bug
As the title says, when I reload gamemode with gmx rcon command and there is one of the new NPCs connected, the server crash. This didnt happen in previous releases when I used old samp-npc.so.

To Reproduce
restart gamemode when NPC is connected

Expected behavior
no crash

Screenshots and/or logs
https://www.youtube.com/watch?v=V0z7fzZ8mDI

Release version
v1.5.8.3079

[NexiusTailer]

#1160 probably related