git-commit: document --amend

diff --git a/commit.c b/commit.c
index eb42d517a4959d83593b7ba9e8fcbc650fea7a5e..d4976fb89f30eacaa1cfe015c6f7a035a1225f55 100644 (file)
--- a/commit.c
+++ b/commit.c
@@ -73,8 +73,7 @@ struct commit *lookup_commit(const unsigned char *sha1)
 {
        struct object *obj = lookup_object(sha1);
        if (!obj) {
-               struct commit *ret = xmalloc(sizeof(struct commit));
-               memset(ret, 0, sizeof(struct commit));
+               struct commit *ret = xcalloc(1, sizeof(struct commit));
                created_object(sha1, &ret->object);
                ret->object.type = commit_type;
                return ret;