builtin-shortlog.c: use string_list_append(), and don't strdup unnecessarily

Make insert_one_record() use string_list_append(), instead of duplicating
its code. Because of this, do not free the "util" member when clearing the
"onelines" string lists: with the new code path it is not initialized to
any value (was being initialized to NULL previously).

Also, avoid unnecessary strdup() calls when inserting names in log->list.
This list always has "strdup_strings" activated, hence strdup'ing namebuf is
unnecessary. This change also removes a latent memory leak in the old code.

NB: The duplicated code mentioned above predated the appearance of
string_list_append().

Signed-off-by: Adeodato Simó <dato@net.com.org.es>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/builtin-shortlog.c b/builtin-shortlog.c
index d03f14f..90e76ae 100644 (file)
--- a/builtin-shortlog.c
+++ b/builtin-shortlog.c
@@ -36,7 +36,6 @@ static void insert_one_record(struct shortlog *log,
        const char *dot3 = log->common_repo_prefix;
        char *buffer, *p;
        struct string_list_item *item;
-       struct string_list *onelines;
        char namebuf[1024];
        size_t len;
        const char *eol;
@@ -68,12 +67,9 @@ static void insert_one_record(struct shortlog *log,
                snprintf(namebuf + len, room, " %.*s", maillen, boemail);
        }
 
-       buffer = xstrdup(namebuf);
-       item = string_list_insert(buffer, &log->list);
+       item = string_list_insert(namebuf, &log->list);
        if (item->util == NULL)
                item->util = xcalloc(1, sizeof(struct string_list));
-       else
-               free(buffer);
 
        /* Skip any leading whitespace, including any blank lines. */
        while (*oneline && isspace(*oneline))
@@ -104,16 +100,7 @@ static void insert_one_record(struct shortlog *log,
                }
        }
 
-       onelines = item->util;
-       if (onelines->nr >= onelines->alloc) {
-               onelines->alloc = alloc_nr(onelines->nr);
-               onelines->items = xrealloc(onelines->items,
-                               onelines->alloc
-                               * sizeof(struct string_list_item));
-       }
-
-       onelines->items[onelines->nr].util = NULL;
-       onelines->items[onelines->nr++].string = buffer;
+       string_list_append(buffer, item->util);
 }
 
 static void read_from_stdin(struct shortlog *log)
@@ -323,7 +310,7 @@ void shortlog_output(struct shortlog *log)
                }
 
                onelines->strdup_strings = 1;
-               string_list_clear(onelines, 1);
+               string_list_clear(onelines, 0);
                free(onelines);
                log->list.items[i].util = NULL;
        }