[blob] Fix-up recent mistake in hb_blob_create() destroy(user_data)

https://github.com/harfbuzz/harfbuzz/pull/3026#discussion_r653437491
2021-06-20 18:47:03 -06:00 · 2021-06-20 18:47:03 -06:00 · cc9bb29491
parent bc06af977f
commit cc9bb29491
1 changed files with 4 additions and 0 deletions
--- a/src/hb-blob.cc
+++ b/src/hb-blob.cc
@ -73,7 +73,11 @@ hb_blob_create (const char        *data,
 		hb_destroy_func_t  destroy)
 {
  if (!length)
+  {
+    if (destroy)
+      destroy (user_data);
    return hb_blob_get_empty ();
+  }

  hb_blob_t *blob = hb_blob_create_or_fail (data, length, mode,
 					    user_data, destroy);