fix bug for compiling at Darwin(x86_64)
fix bug for compiling at Darwin(x86_64)

wkentaro/EusLisp,aginika/EusLisp,aginika/EusLisp,wkentaro/EusLisp,wkentaro/EusLisp,aginika/EusLisp,bmagyar/EusLisp,wkentaro/EusLisp,bmagyar/EusLisp,aginika/EusLisp,bmagyar/EusLisp,bmagyar/EusLisp