Fix the IRI class when the first character following a % is valid, but the second is not.
Fix the IRI class when the first character following a % is valid, but the second is not.


blat/simplepie,simplepie/simplepie,skyzyx/simplepie,skyzyx/simplepie,simplepie/simplepie,Alexia/SimplePie,songfj/simplepie,barryvdh/simplepie,Alexia/SimplePie,blat/simplepie,FreshRSS/simplepie,Alkarex/simplepie,mblaney/simplepie,songfj/simplepie,mblaney/simplepie,ropik/simplepie,gsnedders/complexpie,blat/simplepie,wikidi/simplepie,barryvdh/simplepie,songfj/simplepie,Alkarex/simplepie,FreshRSS/simplepie,Alkarex/simplepie,barryvdh/simplepie,wikidi/simplepie,ropik/simplepie,wikidi/simplepie