Don't call libicu if input string is empty.
Don't call libicu if input string is empty.

Ghabry/easyrpg-liblcf,carstene1ns/easyrpg-liblcf,EasyRPG/liblcf,EasyRPG/liblcf,Ghabry/easyrpg-liblcf,Ghabry/easyrpg-liblcf,carstene1ns/easyrpg-liblcf,EasyRPG/liblcf,Ghabry/easyrpg-liblcf,EasyRPG/liblcf,carstene1ns/easyrpg-liblcf