Fixed JobXPAccumulator

eco-core/core-plugin/src/main/kotlin/com/willfp/ecojobs/jobs/JobXPAccumulator.kt

@@ -1,6 +1,7 @@
 package com.willfp.ecojobs.jobs
 
 import com.willfp.ecojobs.api.giveJobExperience
+import com.willfp.ecojobs.api.hasJobActive
 import com.willfp.libreforge.counters.Accumulator
 import org.bukkit.entity.Player
 
@@ -8,6 +9,10 @@ class JobXPAccumulator(
     private val job: Job
 ) : Accumulator {
     override fun accept(player: Player, count: Double) {
+        if (!player.hasJobActive(job)) {
+            return
+        }
+
         player.giveJobExperience(job, count)
     }
 }