CComponentsItem: prevent reinit of already initialized parent form

Origin commit data
------------------
Commit: a4b2e25bf2
Author: Thilo Graf <dbt@novatux.de>
Date: 2016-09-29 (Thu, 29 Sep 2016)

src/gui/components/cc_item.cpp

@@ -55,6 +55,8 @@ CComponentsItem::CComponentsItem(CComponentsForm* parent)
 
 void CComponentsItem::initParent(CComponentsForm* parent)
 {
+	if (cc_parent == parent)
+		return;
 	cc_parent = parent;
 	if (cc_parent)
 		cc_parent->addCCItem(this);