fix LCConcurrentRunner

Author: lecousin

net.lecousin.core/src/test/java/net/lecousin/framework/core/test/runners/LCConcurrentRunner.java

@@ -57,12 +57,7 @@ public static RunnerScheduler createRunnerScheduler() throws InitializationError
 
 			@Override
 	        public void schedule(Runnable childStatement) {
-				jp.addToJoin(new Task.Unmanaged<Void, NoException>("Execute JUnit test", Task.PRIORITY_LOW) {
-					@Override
-					public Void run() {
-						childStatement.run();
-						return null;
-					}
+				jp.addToJoin(new Task.Cpu.FromRunnable("Execute JUnit test", Task.PRIORITY_LOW, childStatement) {
 					@Override
 					public long getMaxBlockingTimeInNanoBeforeToLog() {
 						return Long.MAX_VALUE;