Function libgit2_sys::git_diff_tree_to_tree

pub unsafe extern "C" fn git_diff_tree_to_tree(
    diff: *mut *mut git_diff,
    repo: *mut git_repository,
    old_tree: *mut git_tree,
    new_tree: *mut git_tree,
    opts: *const git_diff_options,
) -> c_int