Pakistan is democratic country so think first over freedom of speech & freedom of expression, nothing bad if they enjoyed Indian victory, they have total rights over it while if they are refuges it is not their duty that they must support Pakistan, they are free for what they like or dislike. Don't be so conservative.
I know many many many our afghan brothers who disheartened over Indian victory. There is no need to bring nation cause or other regional national and ethnic feeling in sports.
Every body has right to be fan of team he likes without any boundaries of nationalism or ethnicity.
It doesn't means that if i am living in Russia i must support Russian team. So do justification with your thoughts & ideas, we have not let them out without any solidity, base or fair balance.