SLING-4513 - fix build error

git-svn-id: https://svn.apache.org/repos/asf/sling/trunk@1697422 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/src/main/java/org/apache/sling/hapi/impl/MicrodataAttributeHelperImpl.java b/src/main/java/org/apache/sling/hapi/impl/MicrodataAttributeHelperImpl.java
index 8b06163..4d3b8b7 100644
--- a/src/main/java/org/apache/sling/hapi/impl/MicrodataAttributeHelperImpl.java
+++ b/src/main/java/org/apache/sling/hapi/impl/MicrodataAttributeHelperImpl.java
@@ -59,7 +59,7 @@
     public Map<String, String> itemtypeMap() {
         Map<String, String> attrMap = new AttrMap(2);
         attrMap.put("itemtype", type.getPath() + ".html");
-        attrMap.put("itemscope", !type.getAllProperties().isEmpty());
+        attrMap.put("itemscope", String.valueOf(!type.getAllProperties().isEmpty()));
         
         return attrMap;
     }