only send one boost value for multi-valued fields

git-svn-id: https://svn.apache.org/repos/asf/lucene/solr/trunk@548237 13f79535-47bb-0310-9956-ffa450edef68

client/java/solrj/src/org/apache/solr/client/solrj/util/ClientUtils.java

@@ -92,6 +92,9 @@ public class ClientUtils
       Float boost = doc.getBoost( name );
       for( Object o : doc.getFieldValues( name ) ) {
         writeFieldValue(writer, name, boost, o );
+        // only write the boost for the first mulit-valued field
+        // otherwise, the used boost is the product of all the boost values
+        boost = null; 
       }
     }
     writer.write("</doc>");