fix Destrudo the Lost Dragon's Frisson (#998)

Fixed the issue where this card could not be special summoned when the target was absent.

c5560911.lua

@@ -33,10 +33,10 @@ end
 function c5560911.operation(e,tp,eg,ep,ev,re,r,rp)
 	local c=e:GetHandler()
 	local tc=Duel.GetFirstTarget()
-	if c:IsRelateToEffect(e) and tc:IsRelateToEffect(e) then
-		local lv=tc:GetLevel()
+	if c:IsRelateToEffect(e) then
 		if Duel.SpecialSummon(c,0,tp,tp,false,false,POS_FACEUP)~=0 then
-			if tc:IsFaceup() then
+			if tc:IsRelateToEffect(e) and tc:IsFaceup() then
+				local lv=tc:GetLevel()
 				local e1=Effect.CreateEffect(c)
 				e1:SetType(EFFECT_TYPE_SINGLE)
 				e1:SetCode(EFFECT_UPDATE_LEVEL)