Veteran TV journalist Larry King was fortunate, and got all of the $700,000 he invested with Bernard Madoff back. He told the TV show “Extra” Thursday that, through a combination of money from the Madoff estate and from government taxes the Madoffs never paid, there was no harm, no foul. King also said he thinks Ruth Madoff came forward to help her daughter-in-law’s new book about her husband, Mark, who hanged himself with a dog leash on the year anniversary of his father’s arrest.