Spanish prosecutors in March charged Barcelona as well as two of the club's former presidents with corruption.
Ng'eno was cruising towards victory when the canine appeared from nowhere.
Newcastle's reward is a fourth-round trip to Manchester United in a repeat of last season's final.
Uganda's President Museveni said it will promote the countries and positively impact their economies.
Feyenoord striker Santiago Gimenez completed his hat-trick only four minutes after the game was restarted at 55 minutes.
