UNDERTOW-1859 Fix WriteTimeoutTestCase not terminating

Author: TomasHofman

core/src/test/java/io/undertow/server/WriteTimeoutTestCase.java

@@ -31,7 +31,6 @@
 import org.apache.http.HttpResponse;
 import org.apache.http.client.methods.HttpGet;
 import org.junit.Assert;
-import org.junit.Ignore;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.xnio.ChannelListener;
@@ -47,7 +46,7 @@
  */
 @RunWith(DefaultServer.class)
 @HttpOneOnly
-@Ignore("UNDERTOW-1859 this test freezes") //FIXME
+// @Ignore("UNDERTOW-1859 this test freezes") //FIXME
 public class WriteTimeoutTestCase {
 
     private volatile Exception exception;
@@ -92,12 +91,10 @@ public void handleEvent(final Channel channel) {
                         do {
                             try {
                                 int res = response.write(buffer);
-                                if (res == 0) {
-                                    return;
-                                }
                             } catch (IOException e) {
                                 exception = e;
                                 errorLatch.countDown();
+                                break;
                             }
                             if(!buffer.hasRemaining()) {
                                 count++;