Removing a redundant check.

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@270094 13f79535-47bb-0310-9956-ffa450edef68

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

@@ -194,9 +194,8 @@ public class ExecTask extends Task {
      */
     protected void maybeSetResultPropertyValue(int result) {
         String res=Integer.toString(result);
-        if(resultProperty!=null
-           && project.getProperty(resultProperty) == null) {
-                project.setNewProperty(resultProperty,res);
+        if(resultProperty!=null) {
+            project.setNewProperty(resultProperty,res);
         }
     }