[3.14] gh-132983: Fix refleak in zstd dictionary functions (gh-134463)

(cherry picked from commit fb68776591485, AKA gh-134459)

Co-authored-by: Emma Smith <emma@emmatyping.dev>

diff --git a/Modules/_zstd/_zstdmodule.c b/Modules/_zstd/_zstdmodule.c
index b2e4f95b90635611f433852ce796746374e8d79c..17d3bff1e98769f31e479b2d5c4f839ec2191803 100644 (file)
--- a/Modules/_zstd/_zstdmodule.c
+++ b/Modules/_zstd/_zstdmodule.c
@@ -251,7 +251,7 @@ _zstd_train_dict_impl(PyObject *module, PyBytesObject *samples_bytes,
                                             &chunk_sizes);
     if (chunks_number < 0)
     {
-        return NULL;
+        goto error;
     }
 
     /* Allocate dict buffer */
@@ -333,7 +333,7 @@ _zstd_finalize_dict_impl(PyObject *module, PyBytesObject *custom_dict_bytes,
                                             &chunk_sizes);
     if (chunks_number < 0)
     {
-        return NULL;
+        goto error;
     }
 
     /* Allocate dict buffer */