CInfoViewer: try to fix paint info text box after delayed painting of timescale

Origin commit data
------------------
Commit: 5d6e33ac9d
Author: Thilo Graf <dbt@novatux.de>
Date: 2015-12-30 (Wed, 30 Dec 2015)

src/gui/infoviewer.cpp

@@ -1932,6 +1932,10 @@ void CInfoViewer::showInfoFile()
 		return;
 	}
 
+	//check dimension, if changed then kill to force reinit
+	if (infobar_txt->getWidth() != width)
+		infobar_txt->kill();
+
 	//set some properties for info object
 	infobar_txt->setDimensionsAll(xStart, yStart, width, height);
 	infobar_txt->setCorner(RADIUS_SMALL);