Merge pull request #5068 from cdmcnamara/fix-update

Fix options being written to instead of cloning on instance.update

lib/instance.js

@@ -789,6 +789,7 @@ Instance.prototype.update = function(values, options) {
   options = options || {};
   options = options || {};
   if (Array.isArray(options)) options = {fields: options};
   if (Array.isArray(options)) options = {fields: options};
 
 
+  options = this.$Model.$optClone(options);
   setOptions = this.$Model.$optClone(options);
   setOptions = this.$Model.$optClone(options);
   setOptions.attributes = options.fields;
   setOptions.attributes = options.fields;
   this.set(values, setOptions);
   this.set(values, setOptions);