another focus tweak

core/src/processing/core/PApplet.java

@@ -2157,7 +2157,7 @@ public class PApplet extends Applet
             //requestFocusInWindow();
 
             // For 2.0, pass this to the renderer, to lend a hand to OpenGL
-            g.requestFocus(PApplet.this);
+            g.requestFocus();
           }
         });
       }

core/src/processing/core/PGraphics.java

@@ -808,8 +808,10 @@ public class PGraphics extends PImage implements PConstants {
    * Handle grabbing the focus from the parent applet. Other renderers can
    * override this if handling needs to be different.
    */
-  public void requestFocus(Component parent) {  // ignore
-    parent.requestFocusInWindow();
+  public void requestFocus() {  // ignore
+    if (parent != null) {
+      parent.requestFocusInWindow();
+    }
   }