[gimp] app: fix gimp_image_get_active_mask() for GRAY and INDEXED modes

[Michael Natterer <mitch src gnome org>]

commit c55c2b0c4d3be48c58fca924b36cff7581601bc4
Author: Michael Natterer <mitch gimp org>
Date:   Tue Apr 30 18:35:05 2013 +0200

    app: fix gimp_image_get_active_mask() for GRAY and INDEXED modes
    
    Need to check image->active[ALPHA_G,I] for the alpha component.

 app/core/gimpimage.c |    8 ++++----
 1 files changed, 4 insertions(+), 4 deletions(-)
---
diff --git a/app/core/gimpimage.c b/app/core/gimpimage.c
index 16ffcc8..f5b0409 100644
--- a/app/core/gimpimage.c
+++ b/app/core/gimpimage.c
@@ -2316,10 +2316,10 @@ gimp_image_get_active_mask (const GimpImage *image)
 
     case GIMP_GRAY:
     case GIMP_INDEXED:
-      mask |= (private->active[GRAY])  ? GIMP_COMPONENT_RED   : 0;
-      mask |= (private->active[GRAY])  ? GIMP_COMPONENT_GREEN : 0;
-      mask |= (private->active[GRAY])  ? GIMP_COMPONENT_BLUE  : 0;
-      mask |= (private->active[ALPHA]) ? GIMP_COMPONENT_ALPHA : 0;
+      mask |= (private->active[GRAY])    ? GIMP_COMPONENT_RED   : 0;
+      mask |= (private->active[GRAY])    ? GIMP_COMPONENT_GREEN : 0;
+      mask |= (private->active[GRAY])    ? GIMP_COMPONENT_BLUE  : 0;
+      mask |= (private->active[ALPHA_G]) ? GIMP_COMPONENT_ALPHA : 0;
       break;
     }