A 9-year-old gelding has died after suffering an injury in a race at Los Alamitos, the track’s second horse fatality in the last week and fourth this year, state horse racing officials reported Tuesday. Took Charge finished last in Sunday’s third race and was ambulanced off the track, according to the official race chart. He died the same day, according to the California Horse Racing Board, which described it as a racing death, but listed it und…