Slug Rifle headshot damage now displays 9999.

Slug Rifle headshots now display 9999 as their damage value (this is
only display damage, the actual damage isn't even relevant).
Slug Rifle passive no longer works on bosses.

gamemodes/zombiesurvival/entities/weapons/weapon_zs_slugrifle.lua

@@ -120,6 +120,11 @@ function SWEP.BulletCallback(attacker, tr, dmginfo)
 	if tr.HitGroup == HITGROUP_HEAD then
 		local ent = tr.Entity
 		if ent:IsValid() and ent:IsPlayer() then
+			if ent:Team() == TEAM_UNDEAD and ent:GetZombieClassTable().Boss then
+				GenericBulletCallback(attacker, tr, dmginfo)
+				return
+			end
+
 			ent.Gibbed = CurTime()
 		end
 
@@ -128,5 +133,6 @@ function SWEP.BulletCallback(attacker, tr, dmginfo)
 		end
 	end
 
+	INFDAMAGEFLOATER = true
 	GenericBulletCallback(attacker, tr, dmginfo)
 end

gamemodes/zombiesurvival/gamemode/init.lua

@@ -2462,7 +2462,12 @@ function GM:DamageFloater(attacker, victim, dmginfo)
 	if dmgpos == vector_origin then dmgpos = victim:NearestPoint(attacker:EyePos()) end
 
 	net.Start(victim:IsPlayer() and "zs_dmg" or "zs_dmg_prop")
-		net.WriteUInt(math.ceil(dmginfo:GetDamage()), 16)
+		if INFDAMAGEFLOATER then
+			INFDAMAGEFLOATER = nil
+			net.WriteUInt(9999, 16)
+		else
+			net.WriteUInt(math.ceil(dmginfo:GetDamage()), 16)
+		end
 		net.WriteVector(dmgpos)
 	net.Send(attacker)
 end