submodule: convert stage_updated_gitmodules to take a struct index_state

Signed-off-by: Brandon Williams <bmwill@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

builtin/mv.c

@@ -291,7 +291,7 @@ int cmd_mv(int argc, const char **argv, const char *prefix)
 	}
 
 	if (gitmodules_modified)
-		stage_updated_gitmodules();
+		stage_updated_gitmodules(&the_index);
 
 	if (active_cache_changed &&
 	    write_locked_index(&the_index, &lock_file, COMMIT_LOCK))

builtin/rm.c

@@ -382,7 +382,7 @@ int cmd_rm(int argc, const char **argv, const char *prefix)
 		}
 		strbuf_release(&buf);
 		if (gitmodules_modified)
-			stage_updated_gitmodules();
+			stage_updated_gitmodules(&the_index);
 	}
 
 	if (active_cache_changed) {

submodule.c

@@ -143,9 +143,9 @@ int remove_path_from_gitmodules(const char *path)
 	return 0;
 }
 
-void stage_updated_gitmodules(void)
+void stage_updated_gitmodules(struct index_state *istate)
 {
-	if (add_file_to_cache(GITMODULES_FILE, 0))
+	if (add_file_to_index(istate, GITMODULES_FILE, 0))
 		die(_("staging updated .gitmodules failed"));
 }
 

submodule.h

@@ -37,7 +37,7 @@ extern int is_gitmodules_unmerged(const struct index_state *istate);
 extern int is_staging_gitmodules_ok(const struct index_state *istate);
 extern int update_path_in_gitmodules(const char *oldpath, const char *newpath);
 extern int remove_path_from_gitmodules(const char *path);
-extern void stage_updated_gitmodules(void);
+extern void stage_updated_gitmodules(struct index_state *istate);
 extern void set_diffopt_flags_from_submodule_config(struct diff_options *,
 		const char *path);
 extern int git_default_submodule_config(const char *var, const char *value, void *cb);