French payments provider Worldline SA booked a €4.1 billion ($4.7 billion) impairment tied to its merchant services business in the second quarter, reporting earnings for the first time since facing allegations the company ignored warnings of fraud.The impairment on goodwill led Worldline to report a net loss of €4.2 billion in the first half of the year, compared to a net loss of €29 million in the same period last year, according to a statement Wednesday....