[PATCH v10 11/21] lib: Always set errno in hcreate_r

[Sean Anderson]

This could give a confusing error message if it failed and didn't set
errno.

Signed-off-by: Sean Anderson <seanga2 at gmail.com>
Reviewed-by: Bin Meng <bmeng.cn at gmail.com>
---

Changes in v5:
- New

 lib/hashtable.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/lib/hashtable.c b/lib/hashtable.c
index 907e8a642f..e9ac7e252e 100644
--- a/lib/hashtable.c
+++ b/lib/hashtable.c
@@ -109,8 +109,10 @@ int hcreate_r(size_t nel, struct hsearch_data *htab)
 	}
 
 	/* There is still another table active. Return with error. */
-	if (htab->table != NULL)
+	if (htab->table != NULL) {
+		__set_errno(EINVAL);
 		return 0;
+	}
 
 	/* Change nel to the first prime number not smaller as nel. */
 	nel |= 1;		/* make odd */
@@ -123,8 +125,10 @@ int hcreate_r(size_t nel, struct hsearch_data *htab)
 	/* allocate memory and zero out */
 	htab->table = (struct env_entry_node *)calloc(htab->size + 1,
 						sizeof(struct env_entry_node));
-	if (htab->table == NULL)
+	if (htab->table == NULL) {
+		__set_errno(ENOMEM);
 		return 0;
+	}
 
 	/* everything went alright */
 	return 1;
-- 
2.26.2