blkid: optional support for TYPE="fstype"

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

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
diff --git a/util-linux/volume_id/cramfs.c b/util-linux/volume_id/cramfs.c
index b84a6f0..28e9970 100644
--- a/util-linux/volume_id/cramfs.c
+++ b/util-linux/volume_id/cramfs.c
@@ -51,7 +51,7 @@
 		volume_id_set_label_string(id, cs->name, 16);
 
 //		volume_id_set_usage(id, VOLUME_ID_FILESYSTEM);
-//		id->type = "cramfs";
+		IF_FEATURE_BLKID_TYPE(id->type = "cramfs";)
 		return 0;
 	}