avoid segfault when reading header of malformed commits

diff --git a/reflog-walk.c b/reflog-walk.c
index 64c677fc49d7874736221b1828f96d8652cb1fb3..86d18843f52046d87741bffa9f865ec973a2ae73 100644 (file)
--- a/reflog-walk.c
+++ b/reflog-walk.c
@@ -295,6 +295,18 @@ void get_reflog_message(struct strbuf *sb,
        strbuf_add(sb, info->message, len);
 }
 
+const char *get_reflog_ident(struct reflog_walk_info *reflog_info)
+{
+       struct commit_reflog *commit_reflog = reflog_info->last_commit_reflog;
+       struct reflog_info *info;
+
+       if (!commit_reflog)
+               return NULL;
+
+       info = &commit_reflog->reflogs->items[commit_reflog->recno+1];
+       return info->email;
+}
+
 void show_reflog_message(struct reflog_walk_info *reflog_info, int oneline,
        enum date_mode dmode)
 {