[gimp] app: make LCH lightness select-criterion faster

[N/A <ell src gnome org>]

commit b5974d345788f5885c715fef028812d52e0a85f7
Author: Ell <ell_se yahoo com>
Date:   Tue May 9 19:30:43 2017 -0400

    app: make LCH lightness select-criterion faster
    
    babl already has a faster path for getting L only, than going
    through LCH.

 app/core/gimppickable-contiguous-region.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/app/core/gimppickable-contiguous-region.c b/app/core/gimppickable-contiguous-region.c
index 3fb8e65..3e0606e 100644
--- a/app/core/gimppickable-contiguous-region.c
+++ b/app/core/gimppickable-contiguous-region.c
@@ -286,6 +286,9 @@ choose_format (GeglBuffer          *buffer,
       break;
 
     case GIMP_SELECT_CRITERION_LCH_L:
+      format = babl_format ("CIE L alpha float");
+      break;
+
     case GIMP_SELECT_CRITERION_LCH_C:
     case GIMP_SELECT_CRITERION_LCH_H:
       format = babl_format ("CIE LCH(ab) alpha float");