Allow denormalize for null

stephanedelprat · web-flow · commit 4965c544e236 · 2017-03-03T09:48:04.000+01:00
`null` is not a scalar, so on denormalize I get :

```
Warning: ReflectionObject::__construct() expects parameter 1 to be object, null given in vendor/bernard/normalt/src/Normalizer/RecursiveReflectionNormalizer.php line 31
```
diff --git a/src/Normalizer/RecursiveReflectionNormalizer.php b/src/Normalizer/RecursiveReflectionNormalizer.php
@@ -71,6 +71,7 @@ private function normalizeValue($data)
     {
         switch (true) {
             case is_scalar($data):
+            case null === $data:
                 return $data;
 
             case is_array($data):

Original file line number	Diff line number	Diff line change
`@@ -71,6 +71,7 @@ private function normalizeValue($data)`
`71`	`71`	`{`
`72`	`72`	`switch (true) {`
`73`	`73`	`case is_scalar($data):`
	`74`	`+ case null === $data:`
`74`	`75`	`return $data;`
`75`	`76`
`76`	`77`	`case is_array($data):`