Revenant fails to take ghost player and add to the spawned revenant.

[DexeeXI]

Round ID:

2570

Testmerges:

#505 #537 #549 #578 #489

Reproduction:

1. Use storyteller, attempt to spawn revenant
2. Players receive notice to accept and become revenant
3. Revenant is spawned in game world
4. Chosen player fails to be placed into the revenant, no notice by server of who was chosen to be revenant
5. Server sends "ADMIN LOG: An attempt to spawn revenant returned , this is a bug."

Additional Information

No visible runtimes were associated with this error.

[DexeeXI]

Additional comment: After providing a ghost player with the now spawned Revenant, it causes further issues, such that they are unable to drain bodies. Traitor panel reveals that they are properly assigned. Due to the loss of functionality, a further review of runtimes show something the following associated runtime:

[15:57:43] Runtime in code/modules/mob/mob.dm, line 548: Cannot read null.dynamic_lumcount
proc name: run examinate (/mob/proc/run_examinate)
usr: Bidlink2/(revenant (129))
usr.loc: (Medbay Treatment Center (127,102,3))
src: Ghost of peaceful salt (/mob/living/basic/revenant)
src.loc: the floor (127,102,3) (/turf/open/floor/iron/white)
call stack:
Ghost of peaceful salt (/mob/living/basic/revenant): run examinate(You shouldn't see this! (/obj/effect/abstract/interact))
/datum/callback/verb_callback (/datum/callback/verb_callback): InvokeAsync()
Ghost of peaceful salt (/mob/living/basic/revenant): Examine(You shouldn't see this! (/obj/effect/abstract/interact))
You shouldn't see this! (/obj/effect/abstract/interact): ShiftClick(Ghost of peaceful salt (/mob/living/basic/revenant))
Ghost of peaceful salt (/mob/living/basic/revenant): ShiftClickOn(You shouldn't see this! (/obj/effect/abstract/interact))
Ghost of peaceful salt (/mob/living/basic/revenant): ClickOn(You shouldn't see this! (/obj/effect/abstract/interact), "icon-x=20;icon-y=18;vis-x=18;v...")
You shouldn't see this! (/obj/effect/abstract/interact): Click(the floor (128,101,3) (/turf/open/floor/iron/white), "mapwindow.map", "icon-x=20;icon-y=18;vis-x=18;v...")
Bidlink2 (/client): Click(You shouldn't see this! (/obj/effect/abstract/interact), the floor (128,101,3) (/turf/open/floor/iron/white), "mapwindow.map", "icon-x=20;icon-y=18;vis-x=18;v...")

Further investigation is underway.

[DexeeXI]

tgstation/tgstation#78910

FIX ON TG IDENTIFIED.