replace StringBuffer by StringBuilder

git-svn-id: https://svn.apache.org/repos/asf/maven/plugins/trunk@1384337 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/src/main/java/org/apache/maven/plugin/doap/DoapMojo.java b/src/main/java/org/apache/maven/plugin/doap/DoapMojo.java
index cb1460c..8a1b42f 100644
--- a/src/main/java/org/apache/maven/plugin/doap/DoapMojo.java
+++ b/src/main/java/org/apache/maven/plugin/doap/DoapMojo.java
@@ -2654,7 +2654,7 @@
                 throw new IllegalArgumentException( "tags is required" );
             }
 
-            StringBuffer sb = new StringBuffer();
+            StringBuilder sb = new StringBuilder();
             for ( int i = 0; i < tags.length; i++ )
             {
                 if ( i == tags.length - 1 && StringUtils.isEmpty( value ) )