fix: phpstan issues described in #63 (#64)

* fix: phpstan issues described in #63

* fix: avoid psalm false-positive

Author: hussainweb

src/ConventionalCommits/Configuration/Configuration.php

@@ -29,7 +29,7 @@
  * A configuration provides additional rules on top of the Conventional
  * Commits specification
  *
- * @psalm-type ConfigurationOptionsType = array{typeCase?: string | null, types?: string[], scopeRequired?: bool, scopeCase?: string | null, scopes?: string[], descriptionCase?: string | null, descriptionEndMark?: string | null, bodyRequired?: bool, bodyWrapWidth?: int | null, requiredFooters?: string[]}
+ * @psalm-type ConfigurationOptionsType = array{typeCase?: string | null, types?: string[], scopeCase?: string | null, scopeRequired?: bool, scopes?: string[], descriptionCase?: string | null, descriptionEndMark?: string | null, bodyRequired?: bool, bodyWrapWidth?: int | null, requiredFooters?: string[]}
  */
 interface Configuration extends JsonSerializable
 {

src/ConventionalCommits/Configuration/DefaultConfiguration.php

@@ -84,8 +84,9 @@ public function __construct(array $options = [])
         $this->bodyRequired = $options['bodyRequired'] ?? false;
         $this->requiredFooters = $this->requiredFootersIfValid($options['requiredFooters'] ?? []);
 
-        if (is_int($options['bodyWrapWidth'] ?? null)) {
-            $this->bodyWrapWidth = $options['bodyWrapWidth'] ?? null;
+        $bodyWrapWidth = $options['bodyWrapWidth'] ?? null;
+        if (is_int($bodyWrapWidth)) {
+            $this->bodyWrapWidth = $bodyWrapWidth;
         }
     }