fix use token as array on FollowedByCommaAnalyzer

Author: samsonasik

rules/DowngradePhp73/Tokenizer/FollowedByCommaAnalyzer.php

@@ -19,13 +19,13 @@ public function isFollowed(File $file, Node $node): bool
             $currentToken = $oldTokens[$nextTokenPosition];
 
             // only space
-            if (is_array($currentToken) || StringUtils::isMatch($currentToken, '#\s+#')) {
+            if (StringUtils::isMatch((string) $currentToken, '#\s+#')) {
                 ++$nextTokenPosition;
                 continue;
             }
 
             // without comma
-            if (in_array($currentToken, ['(', ')', ';'], true)) {
+            if (in_array((string) $currentToken, ['(', ')', ';'], true)) {
                 return false;
             }