Perform initial work in the job

Currently the first thing a reconciler after startup does is to sleep
for a while then call initialProcess then start the processing loop
(that sleeps again...).

This now moves this initial work into the start job so we have a plain
processing loop in the thread to make further improvements easier.

Author: laeubi

bundles/org.eclipse.jface.text/src/org/eclipse/jface/text/reconciler/AbstractReconciler.java

@@ -172,14 +172,6 @@ public void reset() {
 		 */
 		@Override
 		public void run() {
-
-			delay();
-
-			if (fCanceled)
-				return;
-
-			initialProcess();
-
 			while (!fCanceled) {
 
 				delay();
@@ -230,6 +222,11 @@ public void startReconciling() {
 				}
 				fStarted= true;
 				Job.createSystem("Delayed Reconciler startup", m -> { //$NON-NLS-1$
+					delay();
+					if (fCanceled) {
+						return Status.CANCEL_STATUS;
+					}
+					initialProcess();
 					try {
 						start();
 						return Status.OK_STATUS;