clean up TODO file. No real code changes.

diff --git a/e2fsprogs/old_e2fsprogs/blkid/cache.c b/e2fsprogs/old_e2fsprogs/blkid/cache.c
index 9bae6fb..d1d2914 100644
--- a/e2fsprogs/old_e2fsprogs/blkid/cache.c
+++ b/e2fsprogs/old_e2fsprogs/blkid/cache.c
@@ -35,8 +35,7 @@
 	DBG(DEBUG_CACHE, printf("creating blkid cache (using %s)\n",
 				filename ? filename : "default cache"));
 
-	if (!(cache = (blkid_cache) calloc(1, sizeof(struct blkid_struct_cache))))
-		return -BLKID_ERR_MEM;
+	cache = xzalloc(sizeof(struct blkid_struct_cache));
 
 	INIT_LIST_HEAD(&cache->bic_devs);
 	INIT_LIST_HEAD(&cache->bic_tags);
diff --git a/e2fsprogs/old_e2fsprogs/blkid/dev.c b/e2fsprogs/old_e2fsprogs/blkid/dev.c
index f6503f1..bb0cc91 100644
--- a/e2fsprogs/old_e2fsprogs/blkid/dev.c
+++ b/e2fsprogs/old_e2fsprogs/blkid/dev.c
@@ -20,8 +20,7 @@
 {
 	blkid_dev dev;
 
-	if (!(dev = (blkid_dev) calloc(1, sizeof(struct blkid_struct_dev))))
-		return NULL;
+	dev = xzalloc(sizeof(struct blkid_struct_dev));
 
 	INIT_LIST_HEAD(&dev->bid_devs);
 	INIT_LIST_HEAD(&dev->bid_tags);
diff --git a/e2fsprogs/old_e2fsprogs/blkid/tag.c b/e2fsprogs/old_e2fsprogs/blkid/tag.c
index 006a393..c0a93df 100644
--- a/e2fsprogs/old_e2fsprogs/blkid/tag.c
+++ b/e2fsprogs/old_e2fsprogs/blkid/tag.c
@@ -21,8 +21,7 @@
 {
 	blkid_tag tag;
 
-	if (!(tag = (blkid_tag) calloc(1, sizeof(struct blkid_struct_tag))))
-		return NULL;
+	tag = xzalloc(sizeof(struct blkid_struct_tag));
 
 	INIT_LIST_HEAD(&tag->bit_tags);
 	INIT_LIST_HEAD(&tag->bit_names);