[PATCH v2 7/8] hook.c users: use "hook_exists()" instead of "find_hook()"

["Ævar Arnfjörð Bjarmason" <avarab@gmail.com>]

Use the new hook_exists() function instead of find_hook() where the
latter was called in boolean contexts. This make subsequent changes in
a series where we further refactor the hook API clearer, as we won't
conflate wanting to get the path of the hook with checking for its
existence.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
---
 builtin/commit.c       | 2 +-
 builtin/merge.c        | 2 +-
 builtin/receive-pack.c | 2 +-
 sequencer.c            | 2 +-
 4 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/builtin/commit.c b/builtin/commit.c
index 5359d961d22..883c16256c8 100644
--- a/builtin/commit.c
+++ b/builtin/commit.c
@@ -1052,7 +1052,7 @@ static int prepare_to_commit(const char *index_file, const char *prefix,
 		return 0;
 	}
 
-	if (!no_verify && find_hook("pre-commit")) {
+	if (!no_verify && hook_exists("pre-commit")) {
 		/*
 		 * Re-read the index as pre-commit hook could have updated it,
 		 * and write it out as a tree.  We must do this before we invoke
diff --git a/builtin/merge.c b/builtin/merge.c
index fe664f6a863..956b6259f21 100644
--- a/builtin/merge.c
+++ b/builtin/merge.c
@@ -849,7 +849,7 @@ static void prepare_to_commit(struct commit_list *remoteheads)
 	 * and write it out as a tree.  We must do this before we invoke
 	 * the editor and after we invoke run_status above.
 	 */
-	if (find_hook("pre-merge-commit"))
+	if (hook_exists("pre-merge-commit"))
 		discard_cache();
 	read_cache_from(index_file);
 	strbuf_addbuf(&msg, &merge_msg);
diff --git a/builtin/receive-pack.c b/builtin/receive-pack.c
index e3895aec622..25cc0c907e1 100644
--- a/builtin/receive-pack.c
+++ b/builtin/receive-pack.c
@@ -1464,7 +1464,7 @@ static const char *update_worktree(unsigned char *sha1, const struct worktree *w
 
 	strvec_pushf(&env, "GIT_DIR=%s", absolute_path(git_dir));
 
-	if (!find_hook(push_to_checkout_hook))
+	if (!hook_exists(push_to_checkout_hook))
 		retval = push_to_deploy(sha1, &env, work_tree);
 	else
 		retval = push_to_checkout(sha1, &env, work_tree);
diff --git a/sequencer.c b/sequencer.c
index 8ee6c4ac240..e501945796d 100644
--- a/sequencer.c
+++ b/sequencer.c
@@ -1460,7 +1460,7 @@ static int try_to_commit(struct repository *r,
 		}
 	}
 
-	if (find_hook("prepare-commit-msg")) {
+	if (hook_exists("prepare-commit-msg")) {
 		res = run_prepare_commit_msg_hook(r, msg, hook_commit);
 		if (res)
 			goto out;
-- 
2.33.0.1291.g8857a6a91ac