checkout,clone: check return value of create_symref

diff --git a/builtin/diff-tree.c b/builtin/diff-tree.c
index 1c4ad6223eb9547666ec21f81f410ef1a459ec92..2a12b81e065bfb75f05baf6694e1a9d53129bc40 100644 (file)
--- a/builtin/diff-tree.c
+++ b/builtin/diff-tree.c
@@ -49,9 +49,9 @@ static int stdin_diff_trees(struct tree *tree1, char *line, int len)
        tree2 = lookup_tree(sha1);
        if (!tree2 || parse_tree(tree2))
                return -1;
-       printf("%s %s\n", sha1_to_hex(tree1->object.sha1),
-                         sha1_to_hex(tree2->object.sha1));
-       diff_tree_sha1(tree1->object.sha1, tree2->object.sha1,
+       printf("%s %s\n", oid_to_hex(&tree1->object.oid),
+                         oid_to_hex(&tree2->object.oid));
+       diff_tree_sha1(tree1->object.oid.hash, tree2->object.oid.hash,
                       "", &log_tree_opt.diffopt);
        log_tree_diff_flush(&log_tree_opt);
        return 0;
@@ -82,7 +82,7 @@ static int diff_tree_stdin(char *line)
 
 static const char diff_tree_usage[] =
 "git diff-tree [--stdin] [-m] [-c] [--cc] [-s] [-v] [--pretty] [-t] [-r] [--root] "
-"[<common diff options>] <tree-ish> [<tree-ish>] [<path>...]\n"
+"[<common-diff-options>] <tree-ish> [<tree-ish>] [<path>...]\n"
 "  -r            diff recursively\n"
 "  --root        include the initial commit as diff against /dev/null\n"
 COMMON_DIFF_OPTIONS_HELP;
@@ -139,7 +139,7 @@ int cmd_diff_tree(int argc, const char **argv, const char *prefix)
                break;
        case 1:
                tree1 = opt->pending.objects[0].item;
-               diff_tree_commit_sha1(tree1->sha1);
+               diff_tree_commit_sha1(tree1->oid.hash);
                break;
        case 2:
                tree1 = opt->pending.objects[0].item;
@@ -149,8 +149,8 @@ int cmd_diff_tree(int argc, const char **argv, const char *prefix)
                        tree2 = tree1;
                        tree1 = tmp;
                }
-               diff_tree_sha1(tree1->sha1,
-                              tree2->sha1,
+               diff_tree_sha1(tree1->oid.hash,
+                              tree2->oid.hash,
                               "", &opt->diffopt);
                log_tree_diff_flush(opt);
                break;