[retro-gtk] gl-display: Simplify clearing a field

[Adrien Plazas <aplazas src gnome org>]

commit 2e7aabc42b9cb5398c5a3c1ee99f2f659f0197e3
Author: Adrien Plazas <kekun plazas laposte net>
Date:   Sat Apr 17 00:04:59 2021 +0200

    gl-display: Simplify clearing a field

 retro-gtk/retro-gl-display.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)
---
diff --git a/retro-gtk/retro-gl-display.c b/retro-gtk/retro-gl-display.c
index b58f902..b105926 100644
--- a/retro-gtk/retro-gl-display.c
+++ b/retro-gtk/retro-gl-display.c
@@ -66,10 +66,7 @@ static void
 clear_video (RetroGLDisplay *self)
 {
   g_clear_object (&self->pixbuf);
-  if (self->pixdata != NULL) {
-    retro_pixdata_free (self->pixdata);
-    self->pixdata = NULL;
-  }
+  g_clear_pointer (&self->pixdata, retro_pixdata_free);
 }
 
 static void