blkid: optional support for TYPE="fstype"

Adapted from patch created by T4ndeta <t4ndeta@gmail.com>

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

util-linux/volume_id/volume_id_internal.h

@@ -80,7 +80,9 @@ struct volume_id {
 //	char		type_version[VOLUME_ID_FORMAT_SIZE];
 //	smallint	usage_id;
 //	const char	*usage;
-//	const char	*type;
+#if ENABLE_FEATURE_BLKID_TYPE
+	const char	*type;
+#endif
 };
 
 struct volume_id* FAST_FUNC volume_id_open_node(int fd);