fix for-in snippet

Author: longyiyiyu

for-in.sublime-snippet

@@ -1,6 +1,6 @@
 <snippet>
 	<content><![CDATA[
-for (${1:prop} in ${2:obj}) {
+for (var ${1:prop} in ${2:obj}) {
 	if (${2:obj}.hasOwnProperty(${1:prop})) {
 		${3}
 	}
@@ -9,4 +9,4 @@ for (${1:prop} in ${2:obj}) {
 	<tabTrigger>fi</tabTrigger>
 	<scope>source.js</scope>
 	<description>for in</description>
-</snippet>
+</snippet>