Merge pull request #4 from sj-i/fix-psalm-false-positive

add more @var to suppress a false-positive warning of psalm in a client code

src/TypedCDataDefaultImplementationTrait.php

@@ -126,6 +126,7 @@ public static function newCData(): CData
         $typename = static::getCTypeName();
         /** @var CData $cdata */
         $cdata = static::getFFI()->new($typename);
+        /** @var FFI\CType $type */
         $type = static::getFFI()->type(
             $typename
         );