git_worktree_lookup returns GIT_ERROR instead of GIT_ENOTFOUND for a non-existing worktree

[arroz]

Reproduction steps

Call git_worktree_lookup with a name that does not match the internal name of any existing worktree.

Expected behavior

An error code of GIT_ENOTFOUND should be returned.

Actual behavior

An error code of GIT_ERROR is returned instead.

Version of libgit2 (release number or SHA1)

Current main (22f382539d78f69aa91721ad62bbd7229750a043 at time of writing).

Operating system(s) tested

macOS but should happen on any OS.

[arroz]

Likely cause: this line should return GIT_ENOTFOUND instead of -1 (the code for GIT_ERROR): https://github.com/libgit2/libgit2/blob/main/src/libgit2/worktree.c#L136

[csware]

Fixed using https://github.com/libgit2/libgit2/pull/6395.