Use classic close() handle when macOS 10.13 workaround is on

Author: facchinm

app/src/processing/app/Base.java

@@ -971,7 +971,7 @@ public boolean handleQuit() {
       // Save out the current prefs state
       PreferencesData.save();
 
-      if (!OSUtils.isMacOS()) {
+      if (!OSUtils.isMacOS() || System.getProperty("apple.laf.useScreenMenuBar") == "false") {
         // If this was fired from the menu or an AppleEvent (the Finder),
         // then Mac OS X will send the terminate signal itself.
         System.exit(0);