Fix: do not remove nullable @var

Author: kubawerlos

README.md

@@ -92,9 +92,9 @@ In your PHP CS Fixer configuration register fixers and use them:
 - **PhpdocNoIncorrectVarAnnotationFixer** - `@var` should be correct in the code.
 ```diff
  <?php
--/** @var LoggerInterface $foo */
+-/** @var Foo $foo */
 +
- $bar = new Logger();
+ $bar = new Foo();
 
 ```
 

src/Fixer/PhpdocNoIncorrectVarAnnotationFixer.php

@@ -17,8 +17,8 @@ public function getDefinition() : FixerDefinition
         return new FixerDefinition(
             '`@var` should be correct in the code.',
             [new CodeSample('<?php
-/** @var LoggerInterface $foo */
-$bar = new Logger();
+/** @var Foo $foo */
+$bar = new Foo();
 ')]
         );
     }
@@ -40,7 +40,7 @@ public function fix(\SplFileInfo $file, Tokens $tokens) : void
             }
 
             // remove ones not having type at the beginning
-            $this->removeVarAnnotationNotMatchingPattern($tokens, $index, '/@var\s+[\\\\a-zA-Z_\x7f-\xff]/');
+            $this->removeVarAnnotationNotMatchingPattern($tokens, $index, '/@var\s+[\?\\\\a-zA-Z_\x7f-\xff]/');
 
             $nextIndex = $tokens->getNextMeaningfulToken($index);
 

tests/Fixer/PhpdocNoIncorrectVarAnnotationFixerTest.php

@@ -45,8 +45,8 @@ public function provideFixCases() : \Iterator
     {
         yield [
             '<?php
-/** @var LoggerInterface $foo */
-$foo = new Logger();
+/** @var Foo $foo */
+$foo = new Foo();
 ',
         ];
 
@@ -57,6 +57,13 @@ public function provideFixCases() : \Iterator
 ',
         ];
 
+        yield [
+            '<?php
+/** @var ?Foo $foo */
+$foo = new Foo();
+',
+        ];
+
         yield [
             '<?php