By Martin Baccardax Solid gains from Burger King, as well as a big increase in online sales, helped offset weakness at Popeye’s and deliver stronger-than-expected fourth quarter earnings for Restaurant Brands International. Restaurant Brands International (QSR) – Get Restaurant Brands International Inc Report shares moved higher Tuesday after the Burger King and Popeye’s parent posted stronger-than-expected fourth quarter earnings thanks in part to a big boost from online sales. Restaurant Brands said adjusted earnings for the three months ending in December rose 30.1% from last year to 74 cen…