show-branch: drop head_len variable

We copy the result of resolving HEAD into a buffer and keep
track of its length.  But we never actually use the length
for anything besides the copy. Let's stop passing it around.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/builtin/show-branch.c b/builtin/show-branch.c
index 25669357e97e892ffb050d879b74d13a91d4fafc..f8ce5370184e2b340f26a981cd933ccdf0da149a 100644 (file)
--- a/builtin/show-branch.c
+++ b/builtin/show-branch.c
@@ -470,7 +470,7 @@ static void snarf_refs(int head, int remotes)
        }
 }
 
-static int rev_is_head(char *head, int headlen, char *name,
+static int rev_is_head(char *head, char *name,
                       unsigned char *head_sha1, unsigned char *sha1)
 {
        if ((!head[0]) ||
@@ -623,7 +623,6 @@ int cmd_show_branch(int ac, const char **av, const char *prefix)
        enum rev_sort_order sort_order = REV_SORT_IN_GRAPH_ORDER;
        char head[128];
        const char *head_p;
-       int head_len;
        struct object_id head_oid;
        int merge_base = 0;
        int independent = 0;
@@ -790,11 +789,10 @@ int cmd_show_branch(int ac, const char **av, const char *prefix)
        head_p = resolve_ref_unsafe("HEAD", RESOLVE_REF_READING,
                                    head_oid.hash, NULL);
        if (head_p) {
-               head_len = strlen(head_p);
+               size_t head_len = strlen(head_p);
                memcpy(head, head_p, head_len + 1);
        }
        else {
-               head_len = 0;
                head[0] = 0;
        }
 
@@ -805,7 +803,6 @@ int cmd_show_branch(int ac, const char **av, const char *prefix)
                         * HEAD points at.
                         */
                        if (rev_is_head(head,
-                                       head_len,
                                        ref_name[i],
                                        head_oid.hash, NULL))
                                has_head++;
@@ -864,7 +861,6 @@ int cmd_show_branch(int ac, const char **av, const char *prefix)
                for (i = 0; i < num_rev; i++) {
                        int j;
                        int is_head = rev_is_head(head,
-                                                 head_len,
                                                  ref_name[i],
                                                  head_oid.hash,
                                                  rev[i]->object.oid.hash);