Fixed entering offline mode

src/main/java/envoy/client/ui/LoginDialog.java

@@ -101,8 +101,7 @@ public class LoginDialog extends JDialog {
 
 		// Listen to handshake rejections
 		EventBus.getInstance().register(HandshakeRejectionEvent.class, evt -> {
-			for (Component c : contentPanel.getComponents())
-				if (c == errorMessage) contentPanel.remove(errorMessage);
+			if (errorMessage != null) contentPanel.remove(errorMessage);
 			clearPasswordFields();
 			errorMessage			= new JLabel(evt.get());
 			gbc_errorMessage		= new GridBagConstraints();
@@ -135,9 +134,7 @@ public class LoginDialog extends JDialog {
 				client.initReceiver(localDb, receivedMessageCache);
 				dispose();
 			}
-		} catch (IOException | InterruptedException e) {
-			e.printStackTrace();
-		} catch (TimeLimitExceededException e) {
+		} catch (IOException | InterruptedException | TimeLimitExceededException e) {
 			logger.warning("Could not connect to server. Trying offline mode...");
 			e.printStackTrace();
 			try {

src/main/java/envoy/client/ui/Startup.java

@@ -101,7 +101,6 @@ public class Startup {
 		// Set client user in local database
 		localDb.setUser(client.getSender());
 
-
 		// Initialize chats in local database
 		try {
 			localDb.initializeUserStorage();