Description:
------------
After adding a file by addGlob using add_path and remove_path options, the value of the constant used to define the "remove_path" has changed if it has a trailing slash.

Maybe the code block in line 1604/1605 of php-src/ext/zip/php_zip.c (https://github.com/php/php-src/blob/4d6f88e2152888e4e4e8ac40c2d4a68d28b6a208/ext/zip/php_zip.c#L1604) causes this bug since in these lines the "remove_path" will be modified.

Removing the trailing slash turned out to be a simple workaround for this issue.

I have used the following Dockerfile to build a docker container with php7.3.10 to reproduce this bug.

FROM php:7.3.10-cli

RUN apt-get clean
RUN apt-get update

#install some base extensions
RUN apt-get install -y \
        libzip-dev \
        zip \
  && docker-php-ext-configure zip --with-libzip \
  && docker-php-ext-install zip

Test script:
---------------
<?php

define("TMPDIR", __DIR__ . "/");

$file = 'foo-bar';
touch($file);

$zip = new ZipArchive();
$zip->open("test.zip", ZipArchive::CREATE | ZipArchive::OVERWRITE);
var_dump(TMPDIR);
$zip->addGlob($file, 0, ["remove_path" => TMPDIR]);
var_dump(TMPDIR);
$zip->close();


Expected result:
----------------
string(15) "/usr/src/myapp/"
string(15) "/usr/src/myapp/"

Actual result:
--------------
string(15) "/usr/src/myapp/"
string(15) "/usr/src/myapp"