Add missing return types to magic methods

Author: wouterj

Chunk/ErrorChunk.php

@@ -98,6 +98,9 @@ public function __sleep(): array
         throw new \BadMethodCallException('Cannot serialize '.__CLASS__);
     }
 
+    /**
+     * @return void
+     */
     public function __wakeup()
     {
         throw new \BadMethodCallException('Cannot unserialize '.__CLASS__);

HttplugClient.php

@@ -251,7 +251,7 @@ public function __sleep(): array
         throw new \BadMethodCallException('Cannot serialize '.__CLASS__);
     }
 
-    public function __wakeup()
+    public function __wakeup(): void
     {
         throw new \BadMethodCallException('Cannot unserialize '.__CLASS__);
     }

Response/AmpResponse.php

@@ -144,7 +144,7 @@ public function __sleep(): array
         throw new \BadMethodCallException('Cannot serialize '.__CLASS__);
     }
 
-    public function __wakeup()
+    public function __wakeup(): void
     {
         throw new \BadMethodCallException('Cannot unserialize '.__CLASS__);
     }

Response/CommonResponseTrait.php

@@ -122,6 +122,9 @@ public function __sleep(): array
         throw new \BadMethodCallException('Cannot serialize '.__CLASS__);
     }
 
+    /**
+     * @return void
+     */
     public function __wakeup()
     {
         throw new \BadMethodCallException('Cannot unserialize '.__CLASS__);

Response/TraceableResponse.php

@@ -49,7 +49,7 @@ public function __sleep(): array
         throw new \BadMethodCallException('Cannot serialize '.__CLASS__);
     }
 
-    public function __wakeup()
+    public function __wakeup(): void
     {
         throw new \BadMethodCallException('Cannot unserialize '.__CLASS__);
     }