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/patch/ApplyMojo.java b/src/main/java/org/apache/maven/plugin/patch/ApplyMojo.java
index 0894561..c44a696 100644
--- a/src/main/java/org/apache/maven/plugin/patch/ApplyMojo.java
+++ b/src/main/java/org/apache/maven/plugin/patch/ApplyMojo.java
@@ -382,7 +382,7 @@
 
             if ( !limbo.isEmpty() )
             {
-                StringBuffer extraFileBuffer = new StringBuffer();
+                StringBuilder extraFileBuffer = new StringBuilder();
 
                 extraFileBuffer.append( "Found " + limbo.size() + " unlisted patch files:" );