[PATCH] mailmap: xcalloc mailmap_info

["Marc-André Lureau" <marcandre.lureau@gmail.com>]

This is to avoid reaching free of uninitialized members.

With an invalid .mailmap (and perhaps in other cases), it can reach
free(mi->name) with garbage for example.
---
 mailmap.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/mailmap.c b/mailmap.c
index 02fcfde..fbf7764 100644
--- a/mailmap.c
+++ b/mailmap.c
@@ -88,7 +88,7 @@ static void add_mapping(struct string_list *map,
 			me->email = xstrdup(new_email);
 		}
 	} else {
-		struct mailmap_info *mi = xmalloc(sizeof(struct mailmap_info));
+		struct mailmap_info *mi = xcalloc(1, sizeof(struct mailmap_info));
 		debug_mm("mailmap: adding (complex) entry for %s at index %d\n", old_email, index);
 		if (new_name)
 			mi->name = xstrdup(new_name);
-- 
1.7.7