Signature and Encryption component error

This commit fixes the error that occurs when the signature or the encryption components are instaled but no configuration is set.

Author: Spomky

src/Bundle/JoseFramework/DependencyInjection/Source/Encryption/EncryptionSource.php

@@ -67,8 +67,10 @@ public function load(array $configs, ContainerBuilder $container)
         $loader->load('jwe_serializers.yml');
         $loader->load('compression_methods.yml');
 
-        foreach ($this->sources as $source) {
-            $source->load($configs['jwe'], $container);
+        if (array_key_exists('jwe', $configs)) {
+            foreach ($this->sources as $source) {
+                $source->load($configs['jwe'], $container);
+            }
         }
     }
 

src/Bundle/JoseFramework/DependencyInjection/Source/Signature/SignatureSource.php

@@ -66,8 +66,10 @@ public function load(array $configs, ContainerBuilder $container)
         $loader->load('jws_serializers.yml');
         $loader->load('signature_algorithms.yml');
 
-        foreach ($this->sources as $source) {
-            $source->load($configs['jws'], $container);
+        if (array_key_exists('jws', $configs)) {
+            foreach ($this->sources as $source) {
+                $source->load($configs['jws'], $container);
+            }
         }
     }