[PATCH 12/34] commit-graph: unify the signatures of all write_graph_chunk_*() functions

["SZEDER Gábor" <szeder.dev@gmail.com>]

Update the write_graph_chunk_*() helper functions to have the same
signature:

  - Return an int error code from all these functions.
    write_graph_chunk_base() already has an int error code, now the
    others will have one, too, but since they don't indicate any
    error, they will always return 0.

  - Drop the hash size parameter of write_graph_chunk_oids() and
    write_graph_chunk_data(); its value can be read directly from
    'the_hash_algo' inside these functions as well.

This opens up the possibility for further cleanups and foolproofing in
the following two patches.

Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com>
---
 commit-graph.c | 20 ++++++++++++--------
 1 file changed, 12 insertions(+), 8 deletions(-)

diff --git a/commit-graph.c b/commit-graph.c
index c8ba17e457..33e70bdfea 100644
--- a/commit-graph.c
+++ b/commit-graph.c
@@ -793,7 +793,7 @@ struct write_commit_graph_context {
 	const struct split_commit_graph_opts *split_opts;
 };
 
-static void write_graph_chunk_fanout(struct hashfile *f,
+static int write_graph_chunk_fanout(struct hashfile *f,
 				     struct write_commit_graph_context *ctx)
 {
 	int i, count = 0;
@@ -815,17 +815,19 @@ static void write_graph_chunk_fanout(struct hashfile *f,
 
 		hashwrite_be32(f, count);
 	}
+	return 0;
 }
 
-static void write_graph_chunk_oids(struct hashfile *f, int hash_len,
+static int write_graph_chunk_oids(struct hashfile *f,
 				   struct write_commit_graph_context *ctx)
 {
 	struct commit **list = ctx->commits.list;
 	int count;
 	for (count = 0; count < ctx->commits.nr; count++, list++) {
 		display_progress(ctx->progress, ++ctx->progress_cnt);
-		hashwrite(f, (*list)->object.oid.hash, (int)hash_len);
+		hashwrite(f, (*list)->object.oid.hash, the_hash_algo->rawsz);
 	}
+	return 0;
 }
 
 static const unsigned char *commit_to_sha1(size_t index, void *table)
@@ -834,7 +836,7 @@ static const unsigned char *commit_to_sha1(size_t index, void *table)
 	return commits[index]->object.oid.hash;
 }
 
-static void write_graph_chunk_data(struct hashfile *f, int hash_len,
+static int write_graph_chunk_data(struct hashfile *f,
 				   struct write_commit_graph_context *ctx)
 {
 	struct commit **list = ctx->commits.list;
@@ -852,7 +854,7 @@ static void write_graph_chunk_data(struct hashfile *f, int hash_len,
 			die(_("unable to parse commit %s"),
 				oid_to_hex(&(*list)->object.oid));
 		tree = get_commit_tree_oid(*list);
-		hashwrite(f, tree->hash, hash_len);
+		hashwrite(f, tree->hash, the_hash_algo->rawsz);
 
 		parent = (*list)->parents;
 
@@ -932,9 +934,10 @@ static void write_graph_chunk_data(struct hashfile *f, int hash_len,
 
 		list++;
 	}
+	return 0;
 }
 
-static void write_graph_chunk_extra_edges(struct hashfile *f,
+static int write_graph_chunk_extra_edges(struct hashfile *f,
 					  struct write_commit_graph_context *ctx)
 {
 	struct commit **list = ctx->commits.list;
@@ -984,6 +987,7 @@ static void write_graph_chunk_extra_edges(struct hashfile *f,
 
 		list++;
 	}
+	return 0;
 }
 
 static int oid_compare(const void *_a, const void *_b)
@@ -1462,8 +1466,8 @@ static int write_commit_graph_file(struct write_commit_graph_context *ctx)
 			chunks_nr * ctx->commits.nr);
 	}
 	write_graph_chunk_fanout(f, ctx);
-	write_graph_chunk_oids(f, hashsz, ctx);
-	write_graph_chunk_data(f, hashsz, ctx);
+	write_graph_chunk_oids(f, ctx);
+	write_graph_chunk_data(f, ctx);
 	if (ctx->num_extra_edges)
 		write_graph_chunk_extra_edges(f, ctx);
 	if (ctx->num_commit_graphs_after > 1 &&
-- 
2.27.0.rc1.431.g5c813f95dc