By Matthew Cooper Cristiano Ronaldo was not happy as Portugal suffered a shock 2-0 defeat to Slovenia on Tuesday. Goals from Adam Cerin and Timi Elsnik earned Slovenia a stunning win and handed Roberto Martinez his first defeat since taking charge of Portugal last year. Ronaldo missed Portugal’s previous game against Sweden, having been given time off by Martinez to go on holiday. In his absence, Portugal beat Sweden 5-2 with his replacement Goncalo Ramos among the goalscorers. Ronaldo did return to the starting line-up against Slovenia, but failed to make much of an impact. And the 39-year-ol…