Fix reset write properties process

Author: yidas

src/Model.php

@@ -8,7 +8,7 @@
  * Base Model
  *
  * @author   Nick Tsai <[email protected]>
- * @version  2.17.0
+ * @version  2.17.1
  * @see      https://github.com/yidas/codeigniter-model
  */
 class Model extends \CI_Model implements \ArrayAccess
@@ -1071,6 +1071,8 @@ public function save($runValidation=true)
                 $this->_selfCondition = $insertID;
                 // Event
                 $this->afterSave(true, $this->_readProperties);
+                // Reset properties
+                $this->_writeProperties = [];
             }
 
         } else {
@@ -1091,11 +1093,10 @@ public function save($runValidation=true)
                 $this->_readProperties = array_merge($this->_readProperties, $this->_writeProperties);
                 // Event
                 $this->afterSave(true, $this->_readProperties);
+                // Reset properties
+                $this->_writeProperties = [];
             }
         }
-
-        // Reset properties
-        $this->_writeProperties = [];
 
         return $result;
     }