[TASK] Add some more type declarations

These are some random changes the Rector would do as a result
of the changes of some open PRs.

Author: oliverklee

CHANGELOG.md

@@ -32,7 +32,7 @@ Please also have a look at our
 - Make all non-private properties `@internal` (#886)
 - Use more native type declarations and strict mode
   (#641, #772, #774, #778, #804, #841, #873, #875, #891, #922, #923, #933, #958,
-  #964, #967, #1000, #1044)
+  #964, #967, #1000, #1044, #1139)
 - Add visibility to all class/interface constants (#469)
 
 ### Deprecated

src/CSSList/CSSList.php

@@ -245,10 +245,8 @@ private static function parseAtRule(ParserState $parserState)
     /**
      * Tests an identifier for a given value. Since identifiers are all keywords, they can be vendor-prefixed.
      * We need to check for these versions too.
-     *
-     * @param string $identifier
      */
-    private static function identifierIs($identifier, string $match): bool
+    private static function identifierIs(string $identifier, string $match): bool
     {
         return (\strcasecmp($identifier, $match) === 0)
             ?: \preg_match("/^(-\\w+-)?$match$/i", $identifier) === 1;

src/Value/Value.php

@@ -109,16 +109,14 @@ public static function parseValue(ParserState $parserState, array $listDelimiter
     }
 
     /**
-     * @param bool $ignoreCase
-     *
      * @return CSSFunction|string
      *
      * @throws UnexpectedEOFException
      * @throws UnexpectedTokenException
      *
      * @internal since V8.8.0
      */
-    public static function parseIdentifierOrFunction(ParserState $parserState, $ignoreCase = false)
+    public static function parseIdentifierOrFunction(ParserState $parserState, bool $ignoreCase = false)
     {
         $anchor = $parserState->anchor();
         $result = $parserState->parseIdentifier($ignoreCase);