Switched arguments order for consistency

src/Decoder.php

@@ -163,7 +163,7 @@ protected function decodeDictionary(): ArrayObject
 				'5'     => $this->decodeFastString('5:files',     7, 'files'   ),
 				default => $this->decodeString()
 			};
-			if (strcmp($lastKey, $key) >= 0 && !empty($values))
+			if (strcmp($key, $lastKey) <= 0 && !empty($values))
 			{
 				$this->dictionaryComplianceError($key, $lastKey);
 			}