make the flush of the error stream actually flush

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@958704 13f79535-47bb-0310-9956-ffa450edef68

src/main/org/apache/tools/ant/UnknownElement.java

@@ -269,9 +269,9 @@ public class UnknownElement extends Task {
      */
     protected void handleErrorFlush(String output) {
         if (realThing instanceof Task) {
-            ((Task) realThing).handleErrorOutput(output);
+            ((Task) realThing).handleErrorFlush(output);
         } else {
-            super.handleErrorOutput(output);
+            super.handleErrorFlush(output);
         }
     }
 

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

@@ -732,7 +732,7 @@ public class Java extends Task {
         if (redirector.getErrorStream() != null) {
             redirector.handleErrorFlush(output);
         } else {
-            super.handleErrorOutput(output);
+            super.handleErrorFlush(output);
         }
     }
 

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

@@ -843,6 +843,7 @@ public class Redirector {
                 errorPrintStream = new PrintStream(errorStream);
             }
             errorPrintStream.print(output);
+            errorPrintStream.flush();
         }
     }