iOS: Make a few member variables of QIOSTextInputResponder private

Change-Id: I269b1b5ab802c391a12bcdc8cfe0c4d3e52f9cba
Reviewed-by: Richard Moe Gustavsen <richard.gustavsen@digia.com>
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@digia.com>

src/plugins/platforms/ios/qiostextresponder.h

@@ -47,12 +47,10 @@ class QIOSInputContext;
 
 @interface QIOSTextInputResponder : UIResponder <UITextInputTraits, UIKeyInput, UITextInput>
 {
-  @public
-    QString m_markedText;
-    BOOL m_inSendEventToFocusObject;
-
   @private
     QIOSInputContext *m_inputContext;
+    QString m_markedText;
+    BOOL m_inSendEventToFocusObject;
 }
 
 - (id)initWithInputContext:(QIOSInputContext *)context;