Tiny cleanup

Author: Pyker

src/SolderClient.php

@@ -177,14 +177,14 @@ public static function validateKey(Client $client, $key)
         $body = $response->getBody();
         $json = json_decode($body, true);
 
-        if ($json) {
-            if (array_key_exists("valid", $json)) {
-                return true;
-            }
-        } else {
+        if (!$json) {
             throw new BadJSONException('Failed to decode JSON response when verifying API key');
         }
 
+        if (array_key_exists("valid", $json)) {
+            return true;
+        }
+
         return false;
     }