target/stat: print full t10_wwn.model buffer

Cut 'n paste error saw it only process sizeof(t10_wwn.vendor) characters.

Signed-off-by: David Disseldorp <ddiss@suse.de>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
diff --git a/drivers/target/target_core_stat.c b/drivers/target/target_core_stat.c
index 273c72b..81a6b3e 100644
--- a/drivers/target/target_core_stat.c
+++ b/drivers/target/target_core_stat.c
@@ -246,7 +246,7 @@
 	char str[sizeof(dev->t10_wwn.model)+1];
 
 	/* scsiLuProductId */
-	for (i = 0; i < sizeof(dev->t10_wwn.vendor); i++)
+	for (i = 0; i < sizeof(dev->t10_wwn.model); i++)
 		str[i] = ISPRINT(dev->t10_wwn.model[i]) ?
 			dev->t10_wwn.model[i] : ' ';
 	str[i] = '\0';