Investors are hoping for the return of a more confident Starbucks (SBUX) when the company reports its fiscal second quarter earnings on Tuesday after the bell. In the first quarter, Starbucks posted its first same-store sales growth in North America and the US in two years. Analysts are hoping the momentum continued in the second quarter with turnaround efforts led by CEO Brian Niccol. Wall Street forecast same-store sales growth of 3.7%, led by US and North America sales, according to Bloomberg consen ...