Avoid firing watcher if it failed to start proviously

In case of low inotify watch level, simply avoid doing anything.
Backing storage will be uncorrelated with the sketch content (as before)
TODO: maybe add a notification about this event

Author: facchinm

app/src/processing/app/Editor.java

@@ -96,6 +96,7 @@ public class Editor extends JFrame implements RunnerListener, FocusListener {
   private final Box upper;
   private ArrayList<EditorTab> tabs = new ArrayList<>();
   private int currentTabIndex = -1;
+  private static boolean watcherDisable = false;
 
   private static class ShouldSaveIfModified
       implements Predicate<SketchController> {
@@ -1992,6 +1993,10 @@ protected boolean handleOpenInternal(File sketchFile) {
     // Disable untitled setting from previous document, if any
     untitled = false;
 
+    if (watcherDisable == true) {
+      return true;
+    }
+
     // Add FS watcher for current Editor instance
     Path dir = file.toPath().getParent();
 
@@ -2002,7 +2007,7 @@ public void run() {
         try {
           new WatchDir(dir, true).processEvents(instance);
         } catch (IOException x) {
-          System.err.println(x);
+          watcherDisable = true;
         }
       }
     };