Fix another copyright date
Fix another copyright date

ropik/simplepie,skyzyx/simplepie,wikidi/simplepie,blat/simplepie,simplepie/simplepie,blat/simplepie,ropik/simplepie,wikidi/simplepie,songfj/simplepie,barryvdh/simplepie,FreshRSS/simplepie,wikidi/simplepie,Alkarex/simplepie,simplepie/simplepie,blat/simplepie,mblaney/simplepie,barryvdh/simplepie,FreshRSS/simplepie,mblaney/simplepie,songfj/simplepie,skyzyx/simplepie,Alkarex/simplepie,songfj/simplepie,barryvdh/simplepie,Alkarex/simplepie