Mark Thread As Stopped (WORLD.BIN)

#   ROUTINE: Mark Thread As Stopped (WORLD.BIN)
#       Analog to Mark Thread As Stopped in BATTLE.BIN.
#       Mark the specified thread as not in use.
#       Parameters:
#           r4 = (threadIndex) Specified thread index

800ffe10: 3c028015 lui r2,0x8015
800ffe14: 8c42327c lw r2,0x327c(r2)                     #   threads
800ffe18: 00042280 sll r4,r4,0x0a                       #   threadIndex * sizeof(thread)
800ffe1c: 00822021 addu r4,r4,r2                        #   threads[threadIndex]
800ffe20: 03e00008 jr r31
800ffe24: ac800048 sw r0,0x0048(r4)                     #   threads[threadIndex].isRunning = false