git-tar-tree: fix minor memory leak

Free the root tree object buffer when we're done, plugging a minor leak
in generate_tar().  Note: we cannot simply free(tree.buf) because this
pointer is modified by tree_entry() calls in traverse_tree().

Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx>
Signed-off-by: Junio C Hamano <junkio@cox.net>

diff --git a/builtin-tar-tree.c b/builtin-tar-tree.c
index 7c48db9ec85adb1b8866b2cc1dc0eccd2d1816c7..215892b6967ab3b42ef3826e3e934001de1f5162 100644 (file)
--- a/builtin-tar-tree.c
+++ b/builtin-tar-tree.c
@@ -314,6 +314,7 @@ static int generate_tar(int argc, const char **argv, const char *prefix)
        struct commit *commit;
        struct tree_desc tree;
        struct strbuf current_path;
+       void *buffer;
 
        current_path.buf = xmalloc(PATH_MAX);
        current_path.alloc = PATH_MAX;
@@ -341,8 +342,8 @@ static int generate_tar(int argc, const char **argv, const char *prefix)
        } else
                archive_time = time(NULL);
 
-       tree.buf = read_object_with_reference(sha1, tree_type, &tree.size,
-                                             tree_sha1);
+       tree.buf = buffer = read_object_with_reference(sha1, tree_type,
+                                                      &tree.size, tree_sha1);
        if (!tree.buf)
                die("not a reference to a tag, commit or tree object: %s",
                    sha1_to_hex(sha1));
@@ -351,6 +352,7 @@ static int generate_tar(int argc, const char **argv, const char *prefix)
                write_entry(tree_sha1, &current_path, 040777, NULL, 0);
        traverse_tree(&tree, &current_path);
        write_trailer();
+       free(buffer);
        free(current_path.buf);
        return 0;
 }