wrong assignment after I renamed the parameter. Unfortunately there doesn't seem to be a testcase that catches the error

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@943070 13f79535-47bb-0310-9956-ffa450edef68

src/main/org/apache/tools/ant/taskdefs/Concat.java

@@ -591,7 +591,7 @@ public class Concat extends Task implements ResourceCollection {
      * @deprecated use #setOverwrite instead
      */
     public void setForce(boolean forceOverwrite) {
-        this.forceOverwrite = force;
+        this.forceOverwrite = forceOverwrite;
     }
 
     /**