Chcecking the responde code of given URLs - Script don`t stop after checking all URL`s

I have made a script below. The script is checking responde code of every URL listed in the for example .csv file in column A. Everything works as I planed but after checking all URL`s the script is freezed. I have to do ctrl+c combination to stop it. How can I make script automaticly end the run after all URL's are checked.

#!/bin/bash
for link in `cat $1` $2;
do
response=`curl --output /dev/null --silent --write-out %{http_code} $link`;
if [ "$response" == "$2" ]; then
echo "$link";
fi
done