do not reclaim keyboard focus if new focus widget is a QLineEdit

git-svn-id: https://lmms.svn.sf.net/svnroot/lmms/trunk/lmms@1764 0778d3d1-df1d-0410-868b-ea421aaaa00d

src/core/piano.cpp

@@ -718,7 +718,9 @@ void pianoView::focusOutEvent( QFocusEvent * )
 
 	// focus just switched to another control inside the instrument track
 	// window we live in?
-	if( parentWidget()->parentWidget()->focusWidget() != this )
+	if( parentWidget()->parentWidget()->focusWidget() != this &&
+		!parentWidget()->parentWidget()->
+				focusWidget()->inherits( "QLineEdit" ) )
 	{
 		// then reclaim keyboard focus!
 		setFocus();