Fix a few PHPStan level 1 errors

Signed-off-by: Maurício Meneghini Fauth <[email protected]>

Author: MauricioFauth

composer.json

@@ -20,10 +20,11 @@
         "symfony/polyfill-mbstring": "^1.3"
     },
     "require-dev": {
-        "sami/sami": "^4.0",
+        "phpmyadmin/coding-standard": "^1.0",
+        "phpmyadmin/motranslator": "^4.0",
         "phpunit/php-code-coverage": "*",
         "phpunit/phpunit": "^7.4 || ^8",
-        "phpmyadmin/coding-standard": "^1.0"
+        "sami/sami": "^4.0"
     },
     "conflict": {
         "phpmyadmin/motranslator": "<3.0"
@@ -46,5 +47,8 @@
         "psr-4": {
             "PhpMyAdmin\\SqlParser\\Tests\\": "tests"
         }
+    },
+    "config":{
+        "sort-packages": true
     }
 }

src/Statements/PurgeStatement.php

@@ -71,6 +71,7 @@ public function parse(Parser $parser, TokensList $list)
          */
         $state = 0;
 
+        $prevToken = null;
         for (; $list->idx < $list->count; ++$list->idx) {
             /**
              * Token parsed at this moment.