fix: Fix check of existing usernames in cli scripts (#5667)

`preg_grep` returns an empty array if the username matches no elements
from the usernames array.

Regression introduced in 7f9594b8c7d7799f2e5f89328bd5981410db8cf0

Reference: https://github.com/FreshRSS/FreshRSS/pull/5501

1 files changed, 1 insertions, 1 deletions

diff --git a/cli/create-user.php b/cli/create-user.php
index 1da7f580d..c6364371a 100755
--- a/cli/create-user.php
+++ b/cli/create-user.php
@@ -10,7 +10,7 @@ if (!FreshRSS_user_Controller::checkUsername($username)) {
 }
 
 $usernames = listUsers();
-if (preg_grep("/^$username$/i", $usernames) !== false) {
+if (preg_grep("/^$username$/i", $usernames)) {
 	fail('FreshRSS warning: username already exists “' . $username . '”', EXIT_CODE_ALREADY_EXISTS);
 }