Fixed seemingly random server crashes caused by ArrayIndexOutOfBoundsException on unsafe type during threaded operations by synchronizing add/remove logic for PulseRunner.TASKS

Server/src/main/kotlin/rs09/game/world/PulseRunner.kt

@@ -10,9 +10,12 @@ import java.util.*
 
 class PulseRunner {
     val TASKS = ArrayList<Pulse>()
+
     fun submit(pulse: Pulse){
+        synchronized(this.TASKS) {
             TASKS.add(pulse)
         }
+    }
 }
 /*
 class PulseeRunner {

Server/src/main/kotlin/rs09/worker/MajorUpdateWorker.kt

@@ -106,8 +106,10 @@ class MajorUpdateWorker {
 
         //remove all null or finished pulses from the list
         rmlist.forEach {
+            synchronized(GameWorld.Pulser.TASKS) {
                 GameWorld.Pulser.TASKS.remove(it)
             }
+        }
 
         rmlist.clear()
         //perform our update sequence where we write masks, etc