Port deprecated method

src/proto/chatwidget.cpp

@@ -85,7 +85,7 @@ void ChatWidget::addText(const Message& message) {
 }
 
 void ChatWidget::setPasswordMode ( bool pwMode ) {
-	ui->line->setPasswordMode ( pwMode );
+    ui->line->setEchoMode(pwMode ? QLineEdit::Password : QLineEdit::Normal);
 }
 
 void ChatWidget::sendButtonClicked() {

src/proto/ficsdialog.ui

@@ -91,8 +91,8 @@
             <property name="showClearButton" stdset="0">
              <bool>true</bool>
             </property>
-            <property name="passwordMode">
-             <bool>true</bool>
+            <property name="echoMode">
+		    <enum>QLineEdit::Password</enum>
             </property>
            </widget>
           </item>