builtin/blame.c: struct blame_entry does not need a prev link

diff --git a/builtin/blame.c b/builtin/blame.c
index e44a6bb30a5a5299c6d57150dd2f23454b25891a..219559551d0304c27462d63f9e8966967dbe1fb1 100644 (file)
--- a/builtin/blame.c
+++ b/builtin/blame.c
@@ -197,7 +197,6 @@ static void drop_origin_blob(struct origin *o)
  * scoreboard structure, sorted by the target line number.
  */
 struct blame_entry {
-       struct blame_entry *prev;
        struct blame_entry *next;
 
        /* the first line of this group in the final image;
@@ -282,8 +281,6 @@ static void coalesce(struct scoreboard *sb)
                    ent->s_lno + ent->num_lines == next->s_lno) {
                        ent->num_lines += next->num_lines;
                        ent->next = next->next;
-                       if (ent->next)
-                               ent->next->prev = ent;
                        origin_decref(next->suspect);
                        free(next);
                        ent->score = 0;
@@ -534,7 +531,7 @@ static void add_blame_entry(struct scoreboard *sb, struct blame_entry *e)
                prev = ent;
 
        /* prev, if not NULL, is the last one that is below e */
-       e->prev = prev;
+
        if (prev) {
                e->next = prev->next;
                prev->next = e;
@@ -543,8 +540,6 @@ static void add_blame_entry(struct scoreboard *sb, struct blame_entry *e)
                e->next = sb->ent;
                sb->ent = e;
        }
-       if (e->next)
-               e->next->prev = e;
 }
 
 /*
@@ -555,14 +550,12 @@ static void add_blame_entry(struct scoreboard *sb, struct blame_entry *e)
  */
 static void dup_entry(struct blame_entry *dst, struct blame_entry *src)
 {
-       struct blame_entry *p, *n;
+       struct blame_entry *n;
 
-       p = dst->prev;
        n = dst->next;
        origin_incref(src->suspect);
        origin_decref(dst->suspect);
        memcpy(dst, src, sizeof(*src));
-       dst->prev = p;
        dst->next = n;
        dst->score = 0;
 }
@@ -2502,8 +2495,6 @@ int cmd_blame(int argc, const char **argv, const char *prefix)
                ent->suspect = o;
                ent->s_lno = bottom;
                ent->next = next;
-               if (next)
-                       next->prev = ent;
                origin_incref(o);
        }
        origin_decref(o);