Convert the internals of this function to use struct object_id.  This is
one of the last remaining callers of read_sha1_file_extended that has
not been converted yet.

Signed-off-by: brian m. carlson <sand...@crustytoothpaste.net>
---
 tree-walk.c | 22 +++++++++++-----------
 1 file changed, 11 insertions(+), 11 deletions(-)

diff --git a/tree-walk.c b/tree-walk.c
index 63a87ed666..521defdaa2 100644
--- a/tree-walk.c
+++ b/tree-walk.c
@@ -583,14 +583,14 @@ enum follow_symlinks_result 
get_tree_entry_follow_symlinks(unsigned char *tree_s
        struct dir_state *parents = NULL;
        size_t parents_alloc = 0;
        size_t i, parents_nr = 0;
-       unsigned char current_tree_sha1[20];
+       struct object_id current_tree_oid;
        struct strbuf namebuf = STRBUF_INIT;
        struct tree_desc t;
        int follows_remaining = GET_TREE_ENTRY_FOLLOW_SYMLINKS_MAX_LINKS;
 
        init_tree_desc(&t, NULL, 0UL);
        strbuf_addstr(&namebuf, name);
-       hashcpy(current_tree_sha1, tree_sha1);
+       hashcpy(current_tree_oid.hash, tree_sha1);
 
        while (1) {
                int find_result;
@@ -599,22 +599,22 @@ enum follow_symlinks_result 
get_tree_entry_follow_symlinks(unsigned char *tree_s
 
                if (!t.buffer) {
                        void *tree;
-                       unsigned char root[20];
+                       struct object_id root;
                        unsigned long size;
-                       tree = read_object_with_reference(current_tree_sha1,
+                       tree = read_object_with_reference(current_tree_oid.hash,
                                                          tree_type, &size,
-                                                         root);
+                                                         root.hash);
                        if (!tree)
                                goto done;
 
                        ALLOC_GROW(parents, parents_nr + 1, parents_alloc);
                        parents[parents_nr].tree = tree;
                        parents[parents_nr].size = size;
-                       hashcpy(parents[parents_nr].sha1, root);
+                       hashcpy(parents[parents_nr].sha1, root.hash);
                        parents_nr++;
 
                        if (namebuf.buf[0] == '\0') {
-                               hashcpy(result, root);
+                               hashcpy(result, root.hash);
                                retval = FOUND;
                                goto done;
                        }
@@ -671,14 +671,14 @@ enum follow_symlinks_result 
get_tree_entry_follow_symlinks(unsigned char *tree_s
 
                /* Look up the first (or only) path component in the tree. */
                find_result = find_tree_entry(&t, namebuf.buf,
-                                             current_tree_sha1, mode);
+                                             current_tree_oid.hash, mode);
                if (find_result) {
                        goto done;
                }
 
                if (S_ISDIR(*mode)) {
                        if (!remainder) {
-                               hashcpy(result, current_tree_sha1);
+                               hashcpy(result, current_tree_oid.hash);
                                retval = FOUND;
                                goto done;
                        }
@@ -688,7 +688,7 @@ enum follow_symlinks_result 
get_tree_entry_follow_symlinks(unsigned char *tree_s
                                      1 + first_slash - namebuf.buf);
                } else if (S_ISREG(*mode)) {
                        if (!remainder) {
-                               hashcpy(result, current_tree_sha1);
+                               hashcpy(result, current_tree_oid.hash);
                                retval = FOUND;
                        } else {
                                retval = NOT_DIR;
@@ -714,7 +714,7 @@ enum follow_symlinks_result 
get_tree_entry_follow_symlinks(unsigned char *tree_s
                         */
                        retval = DANGLING_SYMLINK;
 
-                       contents = read_sha1_file(current_tree_sha1, &type,
+                       contents = read_sha1_file(current_tree_oid.hash, &type,
                                                  &link_len);
 
                        if (!contents)

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