Fix GenffsFileTask.java one bug: create *.org failed in some machine.

Root cause is unclosing DataOutputStream after used.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@455 6f19259b-4bc3-4df7-8a09-765794883524

Tools/Source/FrameworkTasks/org/tianocore/framework/tasks/GenFfsFileTask.java

@@ -207,6 +207,7 @@ public class GenFfsFileTask extends Task implements EfiDefine, FfsTypes {
                 }
             }
             dataBuffer.close();
+            orgDataBuffer.close();
         } catch (Exception e) {
             throw new BuildException (e.getMessage());
         }