initialize author and committer to prevent double free on error
diff --git a/gotweb/gotweb.c b/gotweb/gotweb.c
index 9e8a849..20a9cf0 100644
--- a/gotweb/gotweb.c
+++ b/gotweb/gotweb.c
@@ -2942,6 +2942,8 @@ gw_init_header()
header->refs_str = NULL;
header->commit_id = NULL;
+ header->committer = NULL;
+ header->author = NULL;
header->parent_id = NULL;
header->tree_id = NULL;
header->commit_msg = NULL;