Use new PlatformUI.setHelp(..) to avoid error popup in E4 apps

Author: laeubi

team/bundles/org.eclipse.ui.net/src/org/eclipse/ui/internal/net/auth/UserValidationDialog.java

@@ -19,7 +19,12 @@
 import org.eclipse.swt.SWT;
 import org.eclipse.swt.layout.GridData;
 import org.eclipse.swt.layout.GridLayout;
-import org.eclipse.swt.widgets.*;
+import org.eclipse.swt.widgets.Composite;
+import org.eclipse.swt.widgets.Control;
+import org.eclipse.swt.widgets.Display;
+import org.eclipse.swt.widgets.Label;
+import org.eclipse.swt.widgets.Shell;
+import org.eclipse.swt.widgets.Text;
 import org.eclipse.ui.PlatformUI;
 import org.eclipse.ui.internal.net.NetUIMessages;
 
@@ -128,8 +133,7 @@ protected Control createDialogArea(Composite parent) {
 
 		createUsernameFields(main);
 		createPasswordFields(main);
-		PlatformUI.getWorkbench().getHelpSystem().setHelp(main,
-				"org.eclipse.update.ui.UserValidationDialog"); //$NON-NLS-1$
+		PlatformUI.setHelp(main, "org.eclipse.update.ui.UserValidationDialog"); //$NON-NLS-1$
 		return main;
 	}