cifs: match even the scope id for ipv6 addresses

match_address function matches the scope id for ipv6 addresses,
but cifs_match_ipaddr (which is another function used for comparison)
does not use scope id. Doing so with this change.
Signed-off-by: Shyam Prasad N <sprasad@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>

fs/cifs/connect.c

@@ -1294,7 +1294,8 @@ cifs_match_ipaddr(struct sockaddr *srcaddr, struct sockaddr *rhs)
 	case AF_INET6: {
 		struct sockaddr_in6 *saddr6 = (struct sockaddr_in6 *)srcaddr;
 		struct sockaddr_in6 *vaddr6 = (struct sockaddr_in6 *)rhs;
-		return ipv6_addr_equal(&saddr6->sin6_addr, &vaddr6->sin6_addr);
+		return (ipv6_addr_equal(&saddr6->sin6_addr, &vaddr6->sin6_addr)
+			&& saddr6->sin6_scope_id == vaddr6->sin6_scope_id);
 	}
 	default:
 		WARN_ON(1);