m68k: emu: Replace unbounded sprintf() in nfhd_init_one()

Replace unbounded sprintf() with the safer snprintf().

Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
Reviewed-by: Kees Cook <kees@kernel.org>
Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org>
Link: https://patch.msgid.link/20260318001632.2974-3-thorsten.blum@linux.dev
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>

Author: toblux

arch/m68k/emu/nfblock.c

@@ -132,7 +132,8 @@ static int __init nfhd_init_one(int id, u32 blocks, u32 bsize)
 	dev->disk->minors = 16;
 	dev->disk->fops = &nfhd_ops;
 	dev->disk->private_data = dev;
-	sprintf(dev->disk->disk_name, "nfhd%u", dev_id);
+	snprintf(dev->disk->disk_name, sizeof(dev->disk->disk_name), "nfhd%u",
+		 dev_id);
 	set_capacity(dev->disk, (sector_t)blocks * (bsize / 512));
 	err = add_disk(dev->disk);
 	if (err)