CInfoViewer: ensure removing of timescale bar after killed infobar

In some constellations it was possible that timescale  was not removed
from screen after closing of infoviewer.
e.g. user switched from a
channel with epg data to a channel without epg data and infobar was closed
before epg data was complete arrived.

btw: it seems INFOBAR_PROGRESSBAR_ARRANGEMENT_DEFAULT
is not not really "default"

src/gui/infoviewer.cpp

@@ -232,6 +232,8 @@ void CInfoViewer::ResetPB()
 	}
 
 	if (timescale){
+		if (g_settings.infobar_progressbar == SNeutrinoSettings::INFOBAR_PROGRESSBAR_ARRANGEMENT_DEFAULT)
+			timescale->kill();
 		delete timescale;
 		timescale = NULL;
 	}