commit - 30e77f6ad14985d6db8d179b7ed73dc4c8cab68a
commit + 6f6c25d65e82e60c44877d2aa05bcbdbc48e65b3
blob - cb676e08ed97b46d2255d4e5b79240ed2b64d571
blob + 19f043e1c43b4b21c3b19d764f34a7575df5b7a7
--- include/got_object.h
+++ include/got_object.h
@@ -353,5 +353,5 @@ const struct got_error *got_object_tag_create(struct g
     const char *, struct got_object_id *, const char *,
     time_t, const char *, const char *, struct got_repository *, int verbosity);
 
-const struct got_error *got_object_commit_dup(struct got_commit_object **,
-    struct got_commit_object *);
+/* Increment commit object reference counter. */
+void got_object_commit_retain(struct got_commit_object *);
blob - f485d23a6aac717ea3e25da068cf4cea73c1de88
blob + 053eb0ba5b9cf91bc1ea8f179cf16d57da981f43
--- lib/object.c
+++ lib/object.c
@@ -2353,11 +2353,8 @@ done:
 	return err;
 }
 
-const struct got_error *
-got_object_commit_dup(struct got_commit_object **ret,
-    struct got_commit_object *commit)
+void
+got_object_commit_retain(struct got_commit_object *commit)
 {
-	*ret = commit;
 	commit->refcnt++;
-	return NULL;
 }
blob - a2ad8c27009958805e6bb47498c2f321dd725a1a
blob + ee792d2677cda12344066e20f5d3356624a8a091
--- tog/tog.c
+++ tog/tog.c
@@ -2367,11 +2367,8 @@ queue_commits(struct tog_log_thread_args *a)
 					    "alloc_commit_queue_entry");
 					break;
 				}
-
-				err = got_object_commit_dup(&matched->commit,
-				    entry->commit);
-				if (err)
-					break;
+				matched->commit = entry->commit;
+				got_object_commit_retain(entry->commit);
 
 				matched->idx = a->limit_commits->ncommits;
 				TAILQ_INSERT_TAIL(&a->limit_commits->head,
@@ -3182,13 +3179,8 @@ limit_log_view(struct tog_view *view)
 				    "alloc_commit_queue_entry");
 				break;
 			}
-
-			err = got_object_commit_dup(&matched->commit,
-			    entry->commit);
-			if (err) {
-				free(matched);
-				return err;
-			}
+			matched->commit = entry->commit;
+			got_object_commit_retain(entry->commit);
 
 			matched->idx = s->limit_commits.ncommits;
 			TAILQ_INSERT_TAIL(&s->limit_commits.head,