fixed checkbox macro (SPR-6120)

org.springframework.web.servlet/src/main/java/org/springframework/web/servlet/view/freemarker/spring.ftl

@@ -307,10 +307,10 @@
 -->
 <#macro formCheckbox path attributes="">
 	<@bind path />
-	<#local checked><#if status.value?? && status.value?string=="true">true<#else>false</#if></#local>
-	<#local id><#if status.expression??>${status.expression}<#else>${path}</#if></#local>
+    <#assign id="${status.expression}">
+    <#assign isSelected = status.value?? && status.value?string=="true">
 	<input type="hidden" name="_${id}" value="on"/>
-	<input type="checkbox" id="${id}" name="${id}" checked="${checked}" ${attributes}/>
+	<input type="checkbox" id="${id}" name="${id}"<#if isSelected> checked="checked"</#if> ${attributes}/>
 </#macro>
 
 <#--

org.springframework.web.servlet/src/main/java/org/springframework/web/servlet/view/velocity/spring.vm

@@ -280,8 +280,8 @@
 *#
 #macro( springFormCheckbox $path $attributes )
     #springBind($path)
- 	<input type="hidden" name="_${status.expression}" value="on"/>
-	<input type="checkbox" id="${status.expression}" name="${status.expression}" checked="#if("$!{status.value}"=="true")true#{else}false#end" ${attributes}/>
+    <input type="hidden" name="_${status.expression}" value="on"/>
+    <input type="checkbox" id="${status.expression}" name="${status.expression}"#if("$!{status.value}"=="true") checked="checked"#end ${attributes}/>
 #end
 
 #**
@@ -293,7 +293,7 @@
  * @param separator the html tag or other character list that should be used to
  *    separate each option. Typically '<br>'.
  * @param classOrStyle either the name of a CSS class element (which is defined in
- *    the template or an external CSS file) or an inline style.  If the value passed in here
+ *    the template or an external CSS file) or an inline style. If the value passed in here
  *    contains a colon (:) then a 'style=' attribute will be used, else a 'class=' attribute
  *    will be used.
 *#