Western Digital Corp. WDC shares shifted between slight losses and gains in the extended session Monday after the data-storage device company’s results came in better than expected but its forecast didn’t. Western Digital shares hovered between a 2% loss and a 2% gain after hours, following a 2.2% gain in the regular session to close at $34.18.The company reported a third-quarter loss of $572 million, or $1.82 a share, versus net income of $25 million, or 8 cents a share, in the year-ago period. The adjusted loss, which excludes stock-based compensation expenses and other items, was $1.37 a share, versus earnings of $1.65…
