Joy Behar should thank the Rev. Al Sharpton for helping “The View” co-star (and host of her own show on HLN) recover her lost cellphone yesterday. A homeless woman found the phone on her way to the Salvation Army and called Behar’s boyfriend, Steve Janowitz, at their home. When Janowitz met the woman to retrieve the phone, she remarked, “I knew it was important because Al Sharpton’s phone number was on it.” Janowitz gave the good Samaritan a cash reward.