[PATCH 2/4] add -i: hide init/clear_add_i_state() functions

[Junio C Hamano <gitster@pobox.com>]

The "add -i" machinery is encapsulated in run_add_i() function,
which uses init_add_i_state() to initialize the machinery, does its
thing, and clear_add_i_state() to tear it down.  External callers
have no need to call anything other than run_add_i(), starting at
d51b61f5da (add-patch: remove dependency on "add-interactive"
subsystem, 2026-03-02) refactored the code paths involved.

Make init/clear_add_i_state() file-scope static functions, and
"struct add_i_state" type as well.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
---
 add-interactive.c | 11 ++++++++---
 add-interactive.h |  9 ---------
 2 files changed, 8 insertions(+), 12 deletions(-)

diff --git a/add-interactive.c b/add-interactive.c
index 3cf8a1dbf8..9a00daf9f9 100644
--- a/add-interactive.c
+++ b/add-interactive.c
@@ -19,14 +19,19 @@
 #include "prompt.h"
 #include "tree.h"
 
-void init_add_i_state(struct add_i_state *s, struct repository *r,
-		      struct interactive_options *opts)
+struct add_i_state {
+	struct repository *r;
+	struct interactive_config cfg;
+};
+
+static void init_add_i_state(struct add_i_state *s, struct repository *r,
+			     struct interactive_options *opts)
 {
 	s->r = r;
 	interactive_config_init(&s->cfg, r, opts);
 }
 
-void clear_add_i_state(struct add_i_state *s)
+static void clear_add_i_state(struct add_i_state *s)
 {
 	interactive_config_clear(&s->cfg);
 	memset(s, 0, sizeof(*s));
diff --git a/add-interactive.h b/add-interactive.h
index eefa2edc7c..47f67ede82 100644
--- a/add-interactive.h
+++ b/add-interactive.h
@@ -6,15 +6,6 @@
 struct pathspec;
 struct repository;
 
-struct add_i_state {
-	struct repository *r;
-	struct interactive_config cfg;
-};
-
-void init_add_i_state(struct add_i_state *s, struct repository *r,
-		      struct interactive_options *opts);
-void clear_add_i_state(struct add_i_state *s);
-
 int run_add_i(struct repository *r, const struct pathspec *ps,
 	      struct interactive_options *opts);
 
-- 
2.56.0-486-gd49ba3b80a