Lionel Messi soared past Luis Suarez to become La Liga's top scorer on Wednesday by adding his 17th and 18th goals of the season in a much-needed 3-0 victory for Barcelona over Elche.  Barca had followed up last week's crushing Champions League loss to Paris Saint-Germain by drawing at home to Cadiz on Sunday but eased the strain with a comfortable win at the Camp Nou.