Bukkit

What steps will reproduce the problem?
1. Player dcs when he is in a game

What is the expected output? What do you see instead?
[01:06:19 INFO]: Raonet lost connection: Disconnected
[01:06:21 WARN]: [Quake] Task #343 for Quake v1.6 generated an exception
java.lang.NullPointerException
at com.tigerhix.framework.util.RedFactory.removeRed(RedFactory.java:57) ~[?:?]
at com.tigerhix.quake.listener.QuakeMatchListener$2.run(QuakeMatchListener.java:132) ~[?:?]
at org.bukkit.craftbukkit.v1_7_R3.scheduler.CraftTask.run(CraftTask.java:58) ~[spigot-1.7.9-R0.1-SNAPSHOT.jar:git-Spigot-1465]
at org.bukkit.craftbukkit.v1_7_R3.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:345) [spigot-1.7.9-R0.1-SNAPSHOT.jar:git-Spigot-1465]
at net.minecraft.server.v1_7_R3.MinecraftServer.v(MinecraftServer.java:628) [spigot-1.7.9-R0.1-SNAPSHOT.jar:git-Spigot-1465]
at net.minecraft.server.v1_7_R3.DedicatedServer.v(DedicatedServer.java:283) [spigot-1.7.9-R0.1-SNAPSHOT.jar:git-Spigot-1465]
at net.minecraft.server.v1_7_R3.MinecraftServer.u(MinecraftServer.java:576) [spigot-1.7.9-R0.1-SNAPSHOT.jar:git-Spigot-1465]
at net.minecraft.server.v1_7_R3.MinecraftServer.run(MinecraftServer.java:482) [spigot-1.7.9-R0.1-SNAPSHOT.jar:git-Spigot-1465]
at net.minecraft.server.v1_7_R3.ThreadServerApplication.run(SourceFile:628) [spigot-1.7.9-R0.1-SNAPSHOT.jar:git-Spigot-1465]

What version of the product are you using?
1.6 Minequake
Spigot 1.7.9

I don't have an error when someone DC inside an arena or match or quake hub but when someone have a dc never get his inventory back.