Fix up incomplete commit

As pointed out by Curtis Rueden, I should use the statusBar variable I
just introduced. D'oh.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

Author: dscho

src/main/java/org/scijava/ui/DefaultUIService.java

@@ -451,8 +451,8 @@ protected void onEvent(final StatusEvent event) {
 			for (UserInterface ui : getAvailableUIs()) {
 				final StatusBar statusBar = ui.getStatusBar();
 				if (statusBar != null) {
-					ui.getStatusBar().setStatus(message);
-					ui.getStatusBar().setProgress(val, max);
+					statusBar.setStatus(message);
+					statusBar.setProgress(val, max);
 				}
 			}
 		}