fix element theory by sama

Signed-off-by: wyykak <wyy_1414@126.com>

expansions/script/nef/TheElementTheory.lua

@@ -322,6 +322,10 @@ if not TET.ELCounter then
 				genso = code
 				count = math.abs(count)
 			end
+			--归零清除
+			if count == 0 then
+				genso = nil
+			end
 		end
 
 		local eg1 = Effect.GlobalEffect()