MDL-74912 dml: Fix missing nullable marker

2022-11-05 10:09:04 +01:00
parent 314c9671fc
commit e7b463af6d
1 changed files with 2 additions and 2 deletions
@@ -244,9 +244,9 @@ class mysqli_native_moodle_database extends moodle_database {
    /**
     * Set 'dbcollation' option
     *
-     * @return string $dbcollation
+     * @return string|null $dbcollation
     */
-    private function detect_collation(): string {
+    private function detect_collation(): ?string {
        if ($this->external) {
            return null;
        }