* Fix an issue where a debuff doesn't have a type

diff --git a/PerfectRaid_Buffs.lua b/PerfectRaid_Buffs.lua
index 89f0e8c..6c08dae 100644
--- a/PerfectRaid_Buffs.lua
+++ b/PerfectRaid_Buffs.lua
@@ -126,7 +126,9 @@ function Buffs:UNIT_AURA(event, unit)
 		local name,rank,texture,count,type = UnitDebuff(unit, i)
 		if not name and not type then break end
 		buffcache[name] = (buffcache[name] or 0) + 1
-		buffcache[type] = (buffcache[type] or 0) + 1
+		if type then
+			buffcache[type] = (buffcache[type] or 0) + 1
+		end
 	end

 	for k,v in pairs(work) do work[k] = nil end