Add declare(strict_types=1) to src/ (#710)

* declare(strict_types = 1); in src/

* fix issues discovered by strict_types

Author: mhujer

src/Elasticsearch/Client.php

@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types = 1);
+
 namespace Elasticsearch;
 
 use Elasticsearch\Common\Exceptions\BadMethodCallException;

src/Elasticsearch/ClientBuilder.php

@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types = 1);
+
 namespace Elasticsearch;
 
 use Elasticsearch\Common\Exceptions\InvalidArgumentException;

src/Elasticsearch/Common/EmptyLogger.php

@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types = 1);
+
 namespace Elasticsearch\Common;
 
 use Psr\Log\AbstractLogger;

src/Elasticsearch/Common/Exceptions/AlreadyExpiredException.php

@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types = 1);
+
 namespace Elasticsearch\Common\Exceptions;
 
 /**

src/Elasticsearch/Common/Exceptions/BadMethodCallException.php

@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types = 1);
+
 namespace Elasticsearch\Common\Exceptions;
 
 /**

src/Elasticsearch/Common/Exceptions/BadRequest400Exception.php

@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types = 1);
+
 namespace Elasticsearch\Common\Exceptions;
 
 /**

src/Elasticsearch/Common/Exceptions/ClientErrorResponseException.php

@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types = 1);
+
 namespace Elasticsearch\Common\Exceptions;
 
 /**

src/Elasticsearch/Common/Exceptions/Conflict409Exception.php

@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types = 1);
+
 namespace Elasticsearch\Common\Exceptions;
 
 /**

src/Elasticsearch/Common/Exceptions/Curl/CouldNotConnectToHost.php

@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types = 1);
+
 namespace Elasticsearch\Common\Exceptions\Curl;
 
 use Elasticsearch\Common\Exceptions\ElasticsearchException;

src/Elasticsearch/Common/Exceptions/Curl/CouldNotResolveHostException.php

@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types = 1);
+
 namespace Elasticsearch\Common\Exceptions\Curl;
 
 use Elasticsearch\Common\Exceptions\ElasticsearchException;