NPE in onPlayerJoin when no session is stored (3.5.5) #99

Hi, on 3.5.5 (Paper 26.3) every player's first join after a restart throws this:

Could not pass event PlayerJoinEvent to AFKPlus v3.5.5
java.lang.NullPointerException: Cannot invoke "net.lapismc.afkplus.playerdata.AFKSession.processReconnect(net.lapismc.afkplus.playerdata.AFKPlusPlayer)" because "session" is null
    at net.lapismc.afkplus.AFKPlusListeners.onPlayerJoin(AFKPlusListeners.java:74)

If there's no stored session and the player isn't AFK, it falls into the else branch and calls processReconnect on null. Came in with c22ca6e I think.

Something like this should do it:

if (session == null) {
    if (player.isAFK())
        player.forceStopAFK();
} else {
    session.processReconnect(player);
}

AFK detection itself still works fine, it's just the error in console. Thanks!