Fix that empty default value was converted to an empty array despite of strict mode

If Request parameter is an array without default value, then an error should be thrown that "parameter value is not an array" in strict mode

Author: eugef

Request/ParamFetcher.php

@@ -110,14 +110,14 @@ public function get($name, $strict = null)
         $default  = $config->default;
         $paramType = $config instanceof QueryParam ? 'Query' : 'Request';
 
-        if ($config->array) {
-            $default = (array) $default;
-        }
-
         if (null === $strict) {
             $strict = $config->strict;
         }
 
+        if ($config->array && (null !== $default || !$strict)) {
+            $default = (array) $default;
+        }
+
         if ($config instanceof RequestParam) {
             $param = $this->request->request->get($config->getKey(), $default);
         } elseif ($config instanceof QueryParam) {
@@ -130,7 +130,7 @@ public function get($name, $strict = null)
             if (!is_array($param)) {
                 if ($strict) {
                     throw new BadRequestHttpException(
-                        sprintf("% parameter value of '%s' is not an array", $paramType, $name)
+                        sprintf("%s parameter value of '%s' is not an array", $paramType, $name)
                     );
                 }