don't check parameter values if they are not set

Author: xabbuh

src/Symfony/Component/DependencyInjection/Compiler/CheckTypeDeclarationsPass.php

@@ -139,11 +139,17 @@ private function checkTypeDeclarations(Definition $checkedDefinition, \Reflectio
         $envPlaceholderUniquePrefix = $this->container->getParameterBag() instanceof EnvPlaceholderParameterBag ? $this->container->getParameterBag()->getEnvPlaceholderUniquePrefix() : null;
 
         for ($i = 0; $i < $checksCount; ++$i) {
-            if (!$reflectionParameters[$i]->hasType() || $reflectionParameters[$i]->isVariadic()) {
+            $p = $reflectionParameters[$i];
+            if (!$p->hasType() || $p->isVariadic()) {
+                continue;
+            }
+            if (\array_key_exists($p->name, $values)) {
+                $i = $p->name;
+            } elseif (!\array_key_exists($i, $values)) {
                 continue;
             }
 
-            $this->checkType($checkedDefinition, $values[$i], $reflectionParameters[$i], $envPlaceholderUniquePrefix);
+            $this->checkType($checkedDefinition, $values[$i], $p, $envPlaceholderUniquePrefix);
         }
 
         if ($reflectionFunction->isVariadic() && ($lastParameter = end($reflectionParameters))->hasType()) {