shallow: fix -Wsign-compare warnings

Fix a couple of -Wsign-compare issues in "shallow.c" and mark the file
as -Wsign-compare-clean. This change prepares the code for a refactoring
of `repo_in_merge_bases_many()`, which will be adapted to accept the
number of commits as `size_t` instead of `int`.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 3 insertions, 3 deletions

diff --git a/shallow.h b/shallow.h
index e9ca7e4bc8..9bfeade93e 100644
--- a/shallow.h
+++ b/shallow.h
@@ -59,8 +59,8 @@ void prune_shallow(unsigned options);
  */
 struct shallow_info {
 	struct oid_array *shallow;
-	int *ours, nr_ours;
-	int *theirs, nr_theirs;
+	size_t *ours, nr_ours;
+	size_t *theirs, nr_theirs;
 	struct oid_array *ref;
 
 	/* for receive-pack */
@@ -69,7 +69,7 @@ struct shallow_info {
 	int *reachable;
 	int *shallow_ref;
 	struct commit **commits;
-	int nr_commits;
+	size_t nr_commits;
 };
 
 void prepare_shallow_info(struct shallow_info *, struct oid_array *);