basic: check strdup result in khash_dup (#5176)

Fixes CID #1368249

diff --git a/src/basic/khash.c b/src/basic/khash.c
index 9a2a3edb750e8069533c0d55392ca0d3fc80c50c..84648dc1c9463debfeca1e1d8cff9e1e3f9ff4be 100644 (file)
--- a/src/basic/khash.c
+++ b/src/basic/khash.c
@@ -143,7 +143,7 @@ int khash_dup(khash *h, khash **ret) {
 
         copy->fd = -1;
         copy->algorithm = strdup(h->algorithm);
-        if (!copy)
+        if (!copy->algorithm)
                 return -ENOMEM;
 
         copy->fd = accept4(h->fd, NULL, 0, SOCK_CLOEXEC);