[gimp] app: in gimppaintcore-loops, in MaskComponents::finalize_step(), chain up

[Ell <ell src gnome org>]

commit e513e9e0543b691941a9162f56aa79e11e71ab66
Author: Ell <ell_se yahoo com>
Date:   Sat Feb 16 10:09:34 2019 -0500

    app: in gimppaintcore-loops, in MaskComponents::finalize_step(), chain up

 app/paint/gimppaintcore-loops.cc | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/app/paint/gimppaintcore-loops.cc b/app/paint/gimppaintcore-loops.cc
index 1cabc501e6..605faa5045 100644
--- a/app/paint/gimppaintcore-loops.cc
+++ b/app/paint/gimppaintcore-loops.cc
@@ -2142,6 +2142,8 @@ struct MaskComponents : Base
   {
     if (comp_fish)
       gegl_scratch_free (state->comp_pixel);
+
+    Base::finalize_step (params, state);
   }
 };