Set the parent window correctly for Code paster window.

Task-number: QTCREATORBUG-7050

Change-Id: I0d57535a40b0cb29d90d3a7b753d85613a72ac61
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@nokia.com>

src/plugins/cpaster/cpasterplugin.cpp

@@ -253,7 +253,7 @@ void CodepasterPlugin::post(QString data, const QString &mimeType)
 
     const QString username = m_settings->username;
 
-    PasteView view(m_protocols, mimeType, 0);
+    PasteView view(m_protocols, mimeType, ICore::mainWindow());
     view.setProtocol(m_settings->protocol);
 
     const FileDataList diffChunks = splitDiffToFiles(data);