Update the xml parser to be compatible with php7.2

Author: Jaspaul

src/Parsers/XmlParser.php

@@ -2,7 +2,6 @@
 
 class XmlParser extends Parser
 {
-
     private $xml;
 
     /**
@@ -23,7 +22,7 @@ private function objectify($value)
         foreach ((array) $temp as $key => $value) {
             if ($key === "@attributes") {
                 $result['_' . key($value)] = $value[key($value)];
-            } elseif (count($value) < 1) {
+            } elseif (is_array($value) && count($value) < 1) {
                 $result[$key] = '';
             } else {
                 $result[$key] = (is_array($value) or is_object($value)) ? $this->objectify($value) : $value;