Fix serial option with -drive
This is from the KVM tree.
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
diff --git a/vl.c b/vl.c
index 385b124..867111c 100644
--- a/vl.c
+++ b/vl.c
@@ -2537,7 +2537,7 @@
drives_table[drives_table_idx].unit = unit_id;
drives_table[drives_table_idx].onerror = onerror;
drives_table[drives_table_idx].drive_opt_idx = arg - drives_opt;
- strncpy(drives_table[nb_drives].serial, serial, sizeof(serial));
+ strncpy(drives_table[drives_table_idx].serial, serial, sizeof(serial));
nb_drives++;
switch(type) {
