[gimp] app: make compositing of dodge blend mode consistent with rest

[Øyvind Kolås <ok src gnome org>]

commit 954030fab62cb8cd6f05965ef4111b73673e9bc6
Author: Øyvind Kolås <pippin gimp org>
Date:   Fri Jan 13 14:25:46 2017 +0100

    app: make compositing of dodge blend mode consistent with rest

 app/operations/layer-modes/gimpoperationdodge.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/app/operations/layer-modes/gimpoperationdodge.c b/app/operations/layer-modes/gimpoperationdodge.c
index adf568e..57488ff 100644
--- a/app/operations/layer-modes/gimpoperationdodge.c
+++ b/app/operations/layer-modes/gimpoperationdodge.c
@@ -96,7 +96,8 @@ gimp_operation_dodge_process_pixels (gfloat              *in,
     {
       gfloat comp_alpha;
 
-      comp_alpha = MIN (in[ALPHA], layer[ALPHA]) * opacity;
+      comp_alpha = layer[ALPHA] * opacity;
+
       if (has_mask)
         comp_alpha *= *mask;