[gimp] app: fix babl format names in luminance mode

[N/A <ell src gnome org>]

commit f13c177ea72540f5c606284c49576cb7558d8926
Author: Ell <ell_se yahoo com>
Date:   Sun Aug 20 17:07:04 2017 -0400

    app: fix babl format names in luminance mode
    
    More refactoring fallout :P

 .../layer-modes/gimpoperationlayermode-blend.c     |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/app/operations/layer-modes/gimpoperationlayermode-blend.c 
b/app/operations/layer-modes/gimpoperationlayermode-blend.c
index dd01115..e74300e 100644
--- a/app/operations/layer-modes/gimpoperationlayermode-blend.c
+++ b/app/operations/layer-modes/gimpoperationlayermode-blend.c
@@ -859,8 +859,8 @@ gimp_operation_layer_mode_blend_luminance (const gfloat *in,
   gfloat layer_Y[samples], *layer_Y_p;
   gfloat in_Y[samples], *in_Y_p;
 
-  babl_process (babl_fish ("RGBA gfloat", "Y gfloat"), layer, layer_Y, samples);
-  babl_process (babl_fish ("RGBA gfloat", "Y gfloat"), in, in_Y, samples);
+  babl_process (babl_fish ("RGBA float", "Y float"), layer, layer_Y, samples);
+  babl_process (babl_fish ("RGBA float", "Y float"), in, in_Y, samples);
 
   layer_Y_p = &layer_Y[0];
   in_Y_p = &in_Y[0];