ui: fix hide/show callPanel

Change-Id: I9f593bb84cb4e073119ceeae3e22b0a6700ed7be
diff --git a/callwidget.h b/callwidget.h
index bb27718..edc3e86 100644
--- a/callwidget.h
+++ b/callwidget.h
@@ -133,7 +133,7 @@
     void updateConversationsFilterWidget();
     void updateComboBox();
     void connectAccount(const std::string& accId);
-    void showCallPanel();
+    void setCallPanelVisibility(bool visible);
 
     QMenu* menu_;