commit-reach.c: allow paint_down_to_common to handle any repo

As the function is file local and not widely used, migrate it all at once.

Signed-off-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

commit-reach.c

@@ -30,7 +30,8 @@ static int queue_has_nonstale(struct prio_queue *queue)
 }
 
 /* all input commits in one and twos[] must have been parsed! */
-static struct commit_list *paint_down_to_common(struct commit *one, int n,
+static struct commit_list *paint_down_to_common(struct repository *r,
+						struct commit *one, int n,
 						struct commit **twos,
 						int min_generation)
 {
@@ -83,7 +84,7 @@ static struct commit_list *paint_down_to_common(struct commit *one, int n,
 			parents = parents->next;
 			if ((p->object.flags & flags) == flags)
 				continue;
-			if (parse_commit(p))
+			if (repo_parse_commit(r, p))
 				return NULL;
 			p->object.flags |= flags;
 			prio_queue_put(&queue, p);
@@ -116,7 +117,7 @@ static struct commit_list *merge_bases_many(struct commit *one, int n, struct co
 			return NULL;
 	}
 
-	list = paint_down_to_common(one, n, twos, 0);
+	list = paint_down_to_common(the_repository, one, n, twos, 0);
 
 	while (list) {
 		struct commit *commit = pop_commit(&list);
@@ -187,8 +188,8 @@ static int remove_redundant(struct commit **array, int cnt)
 			if (array[j]->generation < min_generation)
 				min_generation = array[j]->generation;
 		}
-		common = paint_down_to_common(array[i], filled, work,
-					      min_generation);
+		common = paint_down_to_common(the_repository, array[i], filled,
+					      work, min_generation);
 		if (array[i]->object.flags & PARENT2)
 			redundant[i] = 1;
 		for (j = 0; j < filled; j++)
@@ -322,7 +323,9 @@ int in_merge_bases_many(struct commit *commit, int nr_reference, struct commit *
 	if (commit->generation > min_generation)
 		return ret;
 
-	bases = paint_down_to_common(commit, nr_reference, reference, commit->generation);
+	bases = paint_down_to_common(the_repository, commit,
+				     nr_reference, reference,
+				     commit->generation);
 	if (commit->object.flags & PARENT2)
 		ret = 1;
 	clear_commit_marks(commit, all_flags);