fix bug in AES_unwrap()

crypto/aes/aes_wrap.c

diff --git a/crypto/aes/aes_wrap.c b/crypto/aes/aes_wrap.c
index a9aebfe..e2d73d3 100644
--- a/crypto/aes/aes_wrap.c
+++ b/crypto/aes/aes_wrap.c
@@ -119,9 +119,9 @@
 			A[7] ^= (unsigned char)(t & 0xff);
 			if (t > 0xff)	
 				{
-				A[6] ^= (unsigned char)((t & 0xff) >> 8);
-				A[5] ^= (unsigned char)((t & 0xff) >> 16);
-				A[4] ^= (unsigned char)((t & 0xff) >> 24);
+				A[6] ^= (unsigned char)((t >> 8) & 0xff);
+				A[5] ^= (unsigned char)((t >> 16) & 0xff);
+				A[4] ^= (unsigned char)((t >> 24) & 0xff);
 				}
 			memcpy(B + 8, R, 8);
 			AES_decrypt(B, B, key);