Merge pull request #132 fix error with empty rows from nastradamus39/patch-2

Author: rekby

CHANGELOG.md

@@ -1,3 +1,5 @@
+### Bugs
+
 * fixed case with unexisting rows in query result
 
 ## 1.13.1

src/QueryResult.php

@@ -40,7 +40,7 @@ public function __construct($result)
                 $data = json_decode($set->serializeToJsonString(), true);
 
                 $this->fillColumns($data['columns']);
-                $this->fillRows($data['rows']);
+                $this->fillRows($data['rows'] ?? []);
                 $this->truncated = $data['truncated'] ?? false;
             }
         }