Speed up SimplePie_Misc::utf8_bad_replace()
Speed up SimplePie_Misc::utf8_bad_replace()

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