Parenthesis miss-placed (detected running PHP 7.3)

1) core_update_code_manager_testcase::test_list_plugin_folder_files

strpos(): Non-string needles will be interpreted as strings in the future. Use an explicit chr() call to preserve the current behavior

/var/www/html/lib/classes/update/code_manager.php:331

/var/www/html/lib/tests/update_code_manager_test.php:141

/var/www/html/lib/phpunit/classes/advanced_testcase.php:80

To re-run:

 vendor/bin/phpunit "core_update_code_manager_testcase" lib/tests/update_code_manager_test.php

2) core_update_code_manager_testcase::test_zip_plugin_folder

strpos(): Non-string needles will be interpreted as strings in the future. Use an explicit chr() call to preserve the current behavior

/var/www/html/lib/classes/update/code_manager.php:331

/var/www/html/lib/classes/update/code_manager.php:224

/var/www/html/lib/tests/update_code_manager_test.php:153

/var/www/html/lib/phpunit/classes/advanced_testcase.php:80

To re-run:

 vendor/bin/phpunit "core_update_code_manager_testcase" lib/tests/update_code_manager_test.php

3) core_update_code_manager_testcase::test_archiving_plugin_version

strpos(): Non-string needles will be interpreted as strings in the future. Use an explicit chr() call to preserve the current behavior

/var/www/html/lib/classes/update/code_manager.php:331

/var/www/html/lib/classes/update/code_manager.php:224

/var/www/html/lib/classes/update/code_manager.php:265

/var/www/html/lib/tests/update_code_manager_test.php:180

/var/www/html/lib/phpunit/classes/advanced_testcase.php:80

To re-run:

 vendor/bin/phpunit "core_update_code_manager_testcase" lib/tests/update_code_manager_test.php

diff --git a/lib/classes/update/code_manager.php b/lib/classes/update/code_manager.php

index 9eac43bf937..3493ad427fb 100644

--- a/lib/classes/update/code_manager.php

+++ b/lib/classes/update/code_manager.php

@@ -328,7 +328,7 @@ class code_manager {

             if ($fileinfo->getFilename() === '..') {

                 continue;

             }

-            if (strpos($fileinfo->getRealPath(), $folderpathinfo->getRealPath() !== 0)) {

+            if (strpos($fileinfo->getRealPath(), $folderpathinfo->getRealPath()) !== 0) {

                 throw new moodle_exception('unexpected_filepath_mismatch', 'core_plugin');

             }

             $key = substr($fileinfo->getRealPath(), $strip);