scanner: no longer allow 1. float literals (#11301)

vlib/gg/gg.v

@@ -745,7 +745,7 @@ pub fn dpi_scale() f32 {
 	// NB: on older X11, `Xft.dpi` from ~/.Xresources, that sokol uses,
 	// may not be set which leads to sapp.dpi_scale reporting incorrectly 0.0
 	if s < 0.1 {
-		s = 1.
+		s = 1.0
 	}
 	return s
 }