only show wrong positioned var tag if it is present

composer.lock

@@ -1725,7 +1725,6 @@
                     "type": "github"
                 }
             ],
-            "abandoned": true,
             "time": "2020-11-30T07:30:19+00:00"
         },
         {

src/DigiComp/Sniffs/Annotations/VarIsLastTagOnPropertySniff.php

@@ -71,7 +71,7 @@ class VarIsLastTagOnPropertySniff extends AbstractVariableSniff
                 }
             }
         }
-        if ($otherToken > $varToken) {
+        if ($varToken !== null && $otherToken > $varToken) {
             $fix = $phpcsFile->addFixableError('@var should be last property annotation', $varToken, 'VarNotLast');
             if ($fix) {
                 $this->moveVarTagToEndOfDoctype(

tests/DigiComp/Sniffs/Annotations/VarIsLastTagOnPropertySniffTest.php

@@ -11,4 +11,10 @@ class VarIsLastTagOnPropertySniffTest extends TestCase
         $report = self::checkFile(__DIR__ . '/data/PropertyOrder.php');
         self::assertSame(2, $report->getErrorCount());
     }
+
+    public function testIgnoreVarTag(): void
+    {
+        $withoutErrors = self::checkFile(__DIR__ . '/data/Child.php');
+        self::assertSame(0, $withoutErrors->getErrorCount());
+    }
 }

tests/DigiComp/Sniffs/Annotations/data/Child.php

@@ -0,0 +1,11 @@
+<?php
+
+namespace Inwebs\PhpCodesniffer\Sniffs\Annotations\data;
+
+class Child extends PropertyOrder
+{
+    /**
+     * @inheritDoc
+     */
+    protected $test;
+}