fix for normal EXT-4035 Old sidepanel tab's text remains highlighted when switching to inventory sidepanel tab

--HG--
branch : product-engine

indra/llui/llfloater.cpp

@@ -1360,6 +1360,7 @@ void LLFloater::bringToFront( S32 x, S32 y )
 // virtual
 void LLFloater::setVisibleAndFrontmost(BOOL take_focus)
 {
+	gFocusMgr.setTopCtrl(NULL);
 	setVisible(TRUE);
 	setFrontmost(take_focus);
 }