Regis Corp. reported 5.4% decline in same store sales for the second quarter versus a 0.8% slip in the same period a year ago, missing the firm’s own projection. In the fall, the Minneapolis-based salon chain had projected same-store sales for the three months ended Dec. 31 would come in at between a decline of 1% and an increase of 1%. Total revenues also declined, dropping 4% to $655.1 million from $682.2 million in the second quarter of 2007. Analysts expected sales of $694.9 million, a...