Fix build error on ix86.

diff --git a/src/fireinfo.c b/src/fireinfo.c
index d295e65d7bc746925dbd09bbc78163bfb07c2ef6..70ddf786db621e0f69e54a0f8e149af84be5cf09 100644 (file)
--- a/src/fireinfo.c
+++ b/src/fireinfo.c
@@ -254,7 +254,7 @@ read_harddisk_serial(char *device, char *serial) {
        }
 
        if (!ioctl(fd, HDIO_GET_IDENTITY, &hd)) {
-           strncpy(serial, (const char *)hd.serial_no, sizeof(serial));
+           strncpy(serial, (const char *)hd.serial_no, 20);
        }
 }