By Syed Raza Hassan KARACHI, Pakistan (Reuters) -The death toll from malaria and other diseases tearing through Pakistan’s flood-ravaged regions reached 324, authorities said on Wednesday, and actress Angelina Jolie said she feared many people she had met during visits to flood-hit areas this week would “not make it” if more aid did not arrive. Hundreds of thousands of people displaced by the floods were living in the open. Stagnant floodwaters, spread over hundreds of kilometres, may take two to six months to recede. Already they have led to widespread cases of skin and eye infections, diarrh…