nasm.c: Use copy_filename to set error message file
nasm.c: Use copy_filename to set error message file

To prevent errname buffer overwrite we should
use copy_filename instead of strcpy.

Signed-off-by: Cyrill Gorcunov <7a1ea01eee6961eb1e372e3508c2670446d086f4@gmail.com>

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