[PATCH 3/4] reftable: handle realloc error in parse_names()

["René Scharfe" <l.s.r@web.de>]

Check the final reallocation for adding the terminating NULL and handle
it just like those in the loop.  Simply use REFTABLE_ALLOC_GROW instead
of keeping the REFTABLE_REALLOC_ARRAY call and adding code to preserve
the original pointer value around it.

Signed-off-by: René Scharfe <l.s.r@web.de>
---
 reftable/basics.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/reftable/basics.c b/reftable/basics.c
index cd6b39dbe9..fe2b83ff83 100644
--- a/reftable/basics.c
+++ b/reftable/basics.c
@@ -241,7 +241,8 @@ char **parse_names(char *buf, int size)
 		p = next + 1;
 	}

-	REFTABLE_REALLOC_ARRAY(names, names_len + 1);
+	if (REFTABLE_ALLOC_GROW(names, names_len + 1, names_cap))
+		goto err;
 	names[names_len] = NULL;

 	return names;
--
2.47.1