avoid pointer arithmetic involving NULL in FLEX_ALLOC_MEM

diff --git a/remote.h b/remote.h
index 312b7ca131c459faeae32ff5cf3021c6516eb2af..4a039bae0b15d6d28aace0c62287c3f3bb11befa 100644 (file)
--- a/remote.h
+++ b/remote.h
@@ -79,9 +79,9 @@ extern const struct refspec *tag_refspec;
 
 struct ref {
        struct ref *next;
-       unsigned char old_sha1[20];
-       unsigned char new_sha1[20];
-       unsigned char old_sha1_expect[20]; /* used by expect-old */
+       struct object_id old_oid;
+       struct object_id new_oid;
+       struct object_id old_oid_expect; /* used by expect-old */
        char *symref;
        unsigned int
                force:1,
@@ -150,7 +150,7 @@ extern struct ref **get_remote_heads(int in, char *src_buf, size_t src_len,
                                     struct sha1_array *shallow);
 
 int resolve_remote_symref(struct ref *ref, struct ref *list);
-int ref_newer(const unsigned char *new_sha1, const unsigned char *old_sha1);
+int ref_newer(const struct object_id *new_oid, const struct object_id *old_oid);
 
 /*
  * Remove and free all but the first of any entries in the input list