Walt Disney Co. reported second-quarter profit that beat analysts’ estimates, bolstered by improving results at its theme-park and merchandise units in a period that lacked a major movie blockbuster. Price increases in California and Florida boosted profit at Disney’s theme parks unit by 24 percent. A 32 percent rise in consumer-products profit also helped counter a drop at the film unit, which was churning out DVDs of the hit “Frozen” a year ago, and rising expenses at ESPN.