null check added for the host method

Author: Vignesh C

src/GenerateSwaggerDoc.php

@@ -33,7 +33,7 @@ public function handle()
     {
         $config = config('laravel-swagger');
 
-        $docs = (new Generator($config, $this->option('filter') ?: null, $this->option('auth') ?: null, $this->option('host') ?: null))->generate();
+        $docs = (new Generator($config, $this->option('filter') ?: null, $this->option('auth') ?: null, !is_null($this->option('host')) ? $this->option('host') : null))->generate();
 
         $formattedDocs = (new FormatterManager($docs))
             ->setFormat($this->option('format'))

src/Generator.php

@@ -82,7 +82,7 @@ protected function getBaseInfo()
                 'description' => $this->config['description'],
                 'version' => $this->config['appVersion'],
             ],
-            'host' => !empty($this->host) ? $this->host : $this->config['host'],
+            'host' => !is_null($this->host) ? $this->host : $this->config['host'],
             'basePath' => $this->config['basePath'],
         ];