The Catholic church actively discourages people from using condoms, despite knowing that they are effective in slowing the spread of AIDS.
To blame the church for an AIDS death, you would have to find someone who:
Died of AIDS.
Contracted AIDS from sex with an infected partner.
Refrained from using a condom because of the church's teaching on condoms.
In other words, they were either engaging in promiscous sex, or possibly monogamous sex, but with a promiscuous partner. However, despite engaging in promiscuous sex, they would have to adhere to the teachings of the church on condom use. If they didn't use a condom because they, or their partner, didn't like them, that's a different story altogether. And of course, the infected partner had to catch AIDS from someone, which would have involved him not using a condom during that sex, either.
So, first, we have to find someone who follows church teachings on contraception. Whether in North America, or Africa, such people are rare. Very few Catholics actually go along with church teaching on contraception. However, not only that, but you have to find someone who is engaging in some sort of sexual practice that would result in AIDS transmission, with a person who has AIDS, and who would have used a condom, except for the fact that the Pope said he wasn't supposed to.
How many such people are there, these swinging dudes and dudettes who are obedient to the Pope, not on matters of sexual behavior in general, but just when it comes to contraception?
Balanced against this, you might find that church teaching might influence some people who, even though they use condoms, might remain monogamous, or at least have fewer sex partners in an attempt to be a bit more spiritual in the use of their bodies. If you are going to blame the Pope for AIDS deaths, I think he should get some credit for AIDS prevention among those who are influenced toward chastity or monogamy through the teachings of the church.
In my humble opinion, it seems very likely that the number of AIDS deaths prevented by Catholic teaching on monogamy and related sexual matters is greater, by a long shot, than the number of AIDS deaths caused by the few people who engage in disease-causing sexual activities, but will refuse contraception because of religious teachings.