Fix: Removed some more E_DEPRECATED error explicit nullable types (#133)

Co-authored-by: Richard Brinkman <r.brinkman@gmail.com>

Author: richardbrinkman

lib/Caxy/HtmlDiff/HtmlDiffConfig.php

@@ -400,7 +400,7 @@ public function setUseTableDiffing($useTableDiffing)
      *
      * @return $this
      */
-    public function setCacheProvider(\Doctrine\Common\Cache\Cache $cacheProvider = null)
+    public function setCacheProvider(?\Doctrine\Common\Cache\Cache $cacheProvider = null)
     {
         $this->cacheProvider = $cacheProvider;
 

lib/Caxy/HtmlDiff/LcsService.php

@@ -17,7 +17,7 @@ class LcsService
      *
      * @param MatchStrategyInterface $matchStrategy
      */
-    public function __construct(MatchStrategyInterface $matchStrategy = null)
+    public function __construct(?MatchStrategyInterface $matchStrategy = null)
     {
         if (null === $matchStrategy) {
             $matchStrategy = new EqualMatchStrategy();

lib/Caxy/HtmlDiff/ListDiffLines.php

@@ -51,7 +51,7 @@ class ListDiffLines extends AbstractDiff
      *
      * @return ListDiffLines
      */
-    public static function create($oldText, $newText, HtmlDiffConfig $config = null)
+    public static function create($oldText, $newText, ?HtmlDiffConfig $config = null)
     {
         $diff = new self($oldText, $newText);