tree eba8780bfd3266fc0fc9371a0e9024d92d04b036
parent 98c6d16d6746059dc1e1183f8f8366eef2a41eff
author Johannes Schindelin <johannes.schindelin@gmx.de> 1708677263 +0000
committer Junio C Hamano <gitster@pobox.com> 1708712380 -0800

Always check `parse_tree*()`'s return value

Otherwise we may easily run into serious crashes: For example, if we run
`init_tree_desc()` directly after a failed `parse_tree()`, we are
accessing uninitialized data or trying to dereference `NULL`.

Note that the `parse_tree()` function already takes care of showing an
error message. The `parse_tree_indirectly()` and
`repo_get_commit_tree()` functions do not, therefore those latter call
sites need to show a useful error message while the former do not.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>