refs: pass NULL to resolve_refdup() if hash is not needed

This allows us to get rid of several write-only variables.

Signed-off-by: Rene Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/builtin/checkout.c b/builtin/checkout.c
index 5c202b7..531f772 100644 (file)
--- a/builtin/checkout.c
+++ b/builtin/checkout.c
@@ -1116,9 +1116,8 @@ static int checkout_branch(struct checkout_opts *opts,
 
        if (new->path && !opts->force_detach && !opts->new_branch &&
            !opts->ignore_other_worktrees) {
-               struct object_id oid;
                int flag;
-               char *head_ref = resolve_refdup("HEAD", 0, oid.hash, &flag);
+               char *head_ref = resolve_refdup("HEAD", 0, NULL, &flag);
                if (head_ref &&
                    (!(flag & REF_ISSYMREF) || strcmp(head_ref, new->path)))
                        die_if_checked_out(new->path, 1);

diff --git a/builtin/receive-pack.c b/builtin/receive-pack.c
index 65d8907..65e38a7 100644 (file)
--- a/builtin/receive-pack.c
+++ b/builtin/receive-pack.c
@@ -1458,7 +1458,6 @@ static void execute_commands(struct command *commands,
 {
        struct check_connected_options opt = CHECK_CONNECTED_INIT;
        struct command *cmd;
-       struct object_id oid;
        struct iterate_data data;
        struct async muxer;
        int err_fd = 0;
@@ -1515,7 +1514,7 @@ static void execute_commands(struct command *commands,
        check_aliased_updates(commands);
 
        free(head_name_to_free);
-       head_name = head_name_to_free = resolve_refdup("HEAD", 0, oid.hash, NULL);
+       head_name = head_name_to_free = resolve_refdup("HEAD", 0, NULL, NULL);
 
        if (use_atomic)
                execute_commands_atomic(commands, si);

diff --git a/ref-filter.c b/ref-filter.c
index bc591f4..5532362 100644 (file)
--- a/ref-filter.c
+++ b/ref-filter.c
@@ -295,9 +295,7 @@ static void if_atom_parser(const struct ref_format *format, struct used_atom *at
 
 static void head_atom_parser(const struct ref_format *format, struct used_atom *atom, const char *arg)
 {
-       struct object_id unused;
-
-       atom->u.head = resolve_refdup("HEAD", RESOLVE_REF_READING, unused.hash, NULL);
+       atom->u.head = resolve_refdup("HEAD", RESOLVE_REF_READING, NULL, NULL);
 }
 
 static struct {
@@ -1317,9 +1315,8 @@ static void populate_value(struct ref_array_item *ref)
        ref->value = xcalloc(used_atom_cnt, sizeof(struct atom_value));
 
        if (need_symref && (ref->flag & REF_ISSYMREF) && !ref->symref) {
-               struct object_id unused1;
                ref->symref = resolve_refdup(ref->refname, RESOLVE_REF_READING,
-                                            unused1.hash, NULL);
+                                            NULL, NULL);
                if (!ref->symref)
                        ref->symref = "";
        }

diff --git a/reflog-walk.c b/reflog-walk.c
index 74ebe51..842b2f7 100644 (file)
--- a/reflog-walk.c
+++ b/reflog-walk.c
@@ -61,11 +61,10 @@ static struct complete_reflogs *read_complete_reflog(const char *ref)
        reflogs->ref = xstrdup(ref);
        for_each_reflog_ent(ref, read_one_reflog, reflogs);
        if (reflogs->nr == 0) {
-               struct object_id oid;
                const char *name;
                void *name_to_free;
                name = name_to_free = resolve_refdup(ref, RESOLVE_REF_READING,
-                                                    oid.hash, NULL);
+                                                    NULL, NULL);
                if (name) {
                        for_each_reflog_ent(name, read_one_reflog, reflogs);
                        free(name_to_free);
@@ -151,9 +150,8 @@ int add_reflog_for_walk(struct reflog_walk_info *info,
                reflogs = item->util;
        else {
                if (*branch == '\0') {
-                       struct object_id oid;
                        free(branch);
-                       branch = resolve_refdup("HEAD", 0, oid.hash, NULL);
+                       branch = resolve_refdup("HEAD", 0, NULL, NULL);
                        if (!branch)
                                die ("No current branch");
 

diff --git a/transport.c b/transport.c
index fb8c01e..f1e2f61 100644 (file)
--- a/transport.c
+++ b/transport.c
@@ -471,11 +471,10 @@ void transport_print_push_status(const char *dest, struct ref *refs,
 {
        struct ref *ref;
        int n = 0;
-       struct object_id head_oid;
        char *head;
        int summary_width = transport_summary_width(refs);
 
-       head = resolve_refdup("HEAD", RESOLVE_REF_READING, head_oid.hash, NULL);
+       head = resolve_refdup("HEAD", RESOLVE_REF_READING, NULL, NULL);
 
        if (verbose) {
                for (ref = refs; ref; ref = ref->next)

diff --git a/wt-status.c b/wt-status.c
index ac972ac..c97282c 100644 (file)
--- a/wt-status.c
+++ b/wt-status.c
@@ -121,15 +121,13 @@ static void status_printf_more(struct wt_status *s, const char *color,
 
 void wt_status_prepare(struct wt_status *s)
 {
-       struct object_id oid;
-
        memset(s, 0, sizeof(*s));
        memcpy(s->color_palette, default_wt_status_colors,
               sizeof(default_wt_status_colors));
        s->show_untracked_files = SHOW_NORMAL_UNTRACKED_FILES;
        s->use_color = -1;
        s->relative_paths = 1;
-       s->branch = resolve_refdup("HEAD", 0, oid.hash, NULL);
+       s->branch = resolve_refdup("HEAD", 0, NULL, NULL);
        s->reference = "HEAD";
        s->fp = stdout;
        s->index_file = get_index_file();