[gtk/image-loading] Fix memorytexture float conversion

[Matthias Clasen <matthiasc src gnome org>]

commit d0420e4f5f34b5eb25f9a677f4992f2f4743686e
Author: Matthias Clasen <mclasen redhat com>
Date:   Wed Sep 15 00:27:32 2021 -0400

    Fix memorytexture float conversion

 gdk/gdkmemorytexture.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/gdk/gdkmemorytexture.c b/gdk/gdkmemorytexture.c
index 631357bcc8..6c08ef531b 100644
--- a/gdk/gdkmemorytexture.c
+++ b/gdk/gdkmemorytexture.c
@@ -603,7 +603,7 @@ convert_rgba16_to_float (float *dest, const guchar *src_data)
   dest[0] = src[0] / 65535.f;
   dest[1] = src[1] / 65535.f;
   dest[2] = src[2] / 65535.f;
-  dest[3] = 1.0;
+  dest[3] = src[3] / 65535.f;
 }
 
 static inline void