Bug 564117 - Using lazy logical operator

Use lazy logical operator (&& and ||) as it is potentially faster.

Change-Id: I6ab8cc6d5ce35cb3a916a6e11de4521340400a73
Signed-off-by: Lars Vogel <Lars.Vogel@vogella.com>
diff --git a/bundles/org.eclipse.jsch.ui/src/org/eclipse/jsch/internal/ui/KeyboardInteractiveDialog.java b/bundles/org.eclipse.jsch.ui/src/org/eclipse/jsch/internal/ui/KeyboardInteractiveDialog.java
index 6b13282..20a1bb4 100644
--- a/bundles/org.eclipse.jsch.ui/src/org/eclipse/jsch/internal/ui/KeyboardInteractiveDialog.java
+++ b/bundles/org.eclipse.jsch.ui/src/org/eclipse/jsch/internal/ui/KeyboardInteractiveDialog.java
@@ -193,7 +193,7 @@
 
 		createPasswordFields(main);
 
-		if (isPasswordAuth & domain != null) {
+		if (isPasswordAuth && domain != null) {
 			allowCachingButton = new Button(main, SWT.CHECK);
 			allowCachingButton.setText(Messages.KeyboardInteractiveDialog_4);
 			data = new GridData(GridData.FILL_HORIZONTAL