[gimp] app: use the image's projectable format for profile conversion

[Michael Natterer <mitch src gnome org>]

commit 0ad8c786b58db53299bacce7b08d1c05b28d6b72
Author: Michael Natterer <mitch gimp org>
Date:   Mon Dec 14 23:02:31 2015 +0100

    app: use the image's projectable format for profile conversion
    
    which is RGB for RGB and INDEXED images, and GRAY for GRAY images.

 app/display/gimpdisplayshell-profile.c |    6 ++----
 1 files changed, 2 insertions(+), 4 deletions(-)
---
diff --git a/app/display/gimpdisplayshell-profile.c b/app/display/gimpdisplayshell-profile.c
index 83c2e98..1260866 100644
--- a/app/display/gimpdisplayshell-profile.c
+++ b/app/display/gimpdisplayshell-profile.c
@@ -35,7 +35,7 @@
 #include "gegl/gimp-babl.h"
 
 #include "core/gimpimage.h"
-#include "core/gimppickable.h"
+#include "core/gimpprojectable.h"
 
 #include "gimpdisplay.h"
 #include "gimpdisplayshell.h"
@@ -91,9 +91,7 @@ gimp_display_shell_profile_update (GimpDisplayShell *shell)
   if (! src_profile)
     return;
 
-  src_format = gimp_babl_format (GIMP_RGB,
-                                 gimp_image_get_precision (image),
-                                 TRUE);
+  src_format = gimp_projectable_get_format (GIMP_PROJECTABLE (image));
 
   if (gimp_display_shell_has_filter (shell) ||
       ! gimp_display_shell_profile_can_convert_to_u8 (shell))