libfdisk: check calloc() return [gcc-analyzer]

Signed-off-by: Karel Zak <kzak@redhat.com>

libfdisk/src/ask.c

@@ -36,6 +36,10 @@ int fdisk_set_ask(struct fdisk_context *cxt,
 struct fdisk_ask *fdisk_new_ask(void)
 {
 	struct fdisk_ask *ask = calloc(1, sizeof(struct fdisk_ask));
+
+	if (!ask)
+		return NULL;
+
 	DBG(ASK, ul_debugobj(ask, "alloc"));
 	ask->refcount = 1;
 	return ask;

libfdisk/src/item.c

@@ -40,6 +40,9 @@ struct fdisk_labelitem *fdisk_new_labelitem(void)
 {
 	struct fdisk_labelitem *li = calloc(1, sizeof(*li));
 
+	if (!li)
+		return NULL;
+
 	li->refcount = 1;
 	DBG(ITEM, ul_debugobj(li, "alloc"));
 	return li;