Fix status bar background color

I don't know if this is the best way to do it but this one-liner
makes it look exactly like dwm's.

Co-authored-by: Raphael Robatsch <raphael-git@tapesoftware.net>

src/bar.cpp

@@ -306,7 +306,11 @@ void Bar::renderStatus()
 	cairo_fill(_painter);
 
 	_x = start;
+	setColorScheme(colorInactive, false);
+	if (_statusCmp.width() > 0)
+	{
 		renderComponent(_statusCmp);
+	}
 }
 
 void Bar::setTagColorScheme(const Tag& t)