KeyStore: Initialize IV correctly.

Change-Id: Idbf207dfcc11b92e606cbf4fd3732ed7a8aa3416
diff --git a/cmds/keystore/keystore.c b/cmds/keystore/keystore.c
index 60cc521..971a177 100644
--- a/cmds/keystore/keystore.c
+++ b/cmds/keystore/keystore.c
@@ -166,7 +166,7 @@
     int length;
     int fd;
 
-    if (read(the_entropy, vector, AES_BLOCK_SIZE) != AES_BLOCK_SIZE) {
+    if (read(the_entropy, blob.vector, AES_BLOCK_SIZE) != AES_BLOCK_SIZE) {
         return SYSTEM_ERROR;
     }