added const keyword to strdup
added const keyword to strdup

projedi/nasm,techkey/nasm,turingstudio/nasm,Distrotech/nasm,Distrotech/nasm,letolabs/nasm,Distrotech/nasm,techkey/nasm,letolabs/nasm,letolabs/nasm,Distrotech/nasm,projedi/nasm,turingstudio/nasm,techkey/nasm,turingstudio/nasm,projedi/nasm,projedi/nasm,projedi/nasm,techkey/nasm,turingstudio/nasm,techkey/nasm