[BUGFIX] Use the safe regexp functions in CSSList (#1368)

Author: oliverklee

CHANGELOG.md

@@ -18,6 +18,8 @@ Please also have a look at our
 
 ### Fixed
 
+- Use typesafe versions of PHP functions (#1368)
+
 ### Documentation
 
 ## 9.0.0: New features, deprecation removals and bug fixes

src/CSSList/CSSList.php

@@ -25,6 +25,8 @@
 use Sabberworm\CSS\Value\URL;
 use Sabberworm\CSS\Value\Value;
 
+use function Safe\preg_match;
+
 /**
  * This is the most generic container available. It can contain `DeclarationBlock`s (rule sets with a selector),
  * `RuleSet`s as well as other `CSSList` objects.
@@ -242,7 +244,7 @@ private static function identifierIs(string $identifier, string $match): bool
             return true;
         }
 
-        return \preg_match("/^(-\\w+-)?$match$/i", $identifier) === 1;
+        return preg_match("/^(-\\w+-)?$match$/i", $identifier) === 1;
     }
 
     /**