QmlDesigner.itemLibrary: fix

Fixing typo caused during refactoring.

Change-Id: Ibd0499bf9a77b9f754b92bbf0123506528331efe
Reviewed-by: Marco Bubke <marco.bubke@nokia.com>

src/plugins/qmldesigner/designercore/metainfo/itemlibraryinfo.cpp

@@ -317,7 +317,7 @@ void ItemLibraryInfo::clearEntries()
 
 void ItemLibraryInfo::setBaseInfo(ItemLibraryInfo *baseInfo)
 {
-    baseInfo = baseInfo;
+    m_baseInfo = baseInfo;
 }
 
 } // namespace QmlDesigner