[gtk/wip/chergert/glproto] next: fix comment typo

[Christian Hergert <chergert src gnome org>]

commit 2ac55366ab0e07ab3163df5ae210a335599cb03d
Author: Christian Hergert <chergert redhat com>
Date:   Tue Feb 23 12:20:55 2021 -0800

    next: fix comment typo

 gsk/next/gskglrenderer.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/gsk/next/gskglrenderer.c b/gsk/next/gskglrenderer.c
index b49e3c75f7..d082ffb733 100644
--- a/gsk/next/gskglrenderer.c
+++ b/gsk/next/gskglrenderer.c
@@ -159,8 +159,8 @@ get_render_region (GdkSurface   *surface,
   whole_surface.width = gdk_surface_get_width (surface);
   whole_surface.height = gdk_surface_get_height (surface);
 
-  /* Damage does not have scale factor applied. so we can compare
-   * it to whole surface which also doesn'th have scale factor applied.
+  /* Damage does not have scale factor applied so we can compare it to
+   * @whole_surface which also doesn't have the scale factor applied.
    */
   damage = gdk_draw_context_get_frame_region (GDK_DRAW_CONTEXT (context));