fsck: handle NULL return of lookup_blob() and lookup_tree()

diff --git a/builtin/log.c b/builtin/log.c
index c6362cf92ed799696128a5da6c802813db62fbcf..5ffc380bd71f0ab8b5bec06f864e9cdcffda1e2f 100644 (file)
--- a/builtin/log.c
+++ b/builtin/log.c
@@ -372,11 +372,14 @@ static int cmd_log_walk(struct rev_info *rev)
                         */
                        rev->max_count++;
                if (!rev->reflog_info) {
-                       /* we allow cycles in reflog ancestry */
+                       /*
+                        * We may show a given commit multiple times when
+                        * walking the reflogs.
+                        */
                        free_commit_buffer(commit);
+                       free_commit_list(commit->parents);
+                       commit->parents = NULL;
                }
-               free_commit_list(commit->parents);
-               commit->parents = NULL;
                if (saved_nrl < rev->diffopt.needed_rename_limit)
                        saved_nrl = rev->diffopt.needed_rename_limit;
                if (rev->diffopt.degraded_cc_to_c)