Fix for enter key inserting into password fields in Symbian

QML TextInput and TextField elements with echoMode TextInput.Password
adds enter key into container string.

Modified filtering in Symbian QCoeFepInputContext to disable adding
enter key for hidden editors.

Task-Number: 1009418
Change-Id: If7928ccdb131d11f8c975b0efe890b85f3ba202e
Reviewed-by: Jaakko Helanti <[email protected]>
Reviewed-by: Sergio Ahumada <[email protected]>
(cherry picked from commit a9aa74e)
Reviewed-by: Aapo Haapanen <[email protected]>

Author: Marko Kenttala

src/gui/inputmethod/qcoefepinputcontext_s60.cpp

@@ -743,7 +743,8 @@ bool QCoeFepInputContext::filterEvent(const QEvent *event)
 
         if (keyEvent->type() == QEvent::KeyPress
             && currentHints & Qt::ImhHiddenText
-            && !keyEvent->text().isEmpty()) {
+            && !keyEvent->text().isEmpty()
+            && keyEvent->key() != Qt::Key_Enter) {
             // Send some temporary preedit text in order to make text visible for a moment.
             m_preeditString = keyEvent->text();
             QList<QInputMethodEvent::Attribute> attributes;