tree count wrong number drirectories

[Matteo Carotta]

the tree command counts N+1 directories if N>0 instead of N.

ProblemType: Bug
DistroRelease: Ubuntu 24.04
Package: tree 2.1.1-2ubuntu3
ProcVersionSignature: Ubuntu 6.8.0-31.31-generic 6.8.1
Uname: Linux 6.8.0-31-generic x86_64
ApportVersion: 2.28.1-0ubuntu2
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Tue May 21 15:04:01 2024
Dependencies:
 gcc-14-base 14-20240412-0ubuntu1
 libc6 2.39-0ubuntu8.1
 libgcc-s1 14-20240412-0ubuntu1
 libidn2-0 2.3.7-2build1
 libunistring5 1.1-2build1
InstallationDate: Installed on 2024-05-18 (3 days ago)
InstallationMedia: Ubuntu 24.04 LTS "Noble Numbat" - Release amd64 (20240424)
ProcEnviron:
 LANG=en_US.UTF-8
 PATH=(custom, no user)
 SHELL=/bin/bash
 XDG_RUNTIME_DIR=<set>
SourcePackage: tree
UpgradeStatus: No upgrade log present (probably fresh install)