[gimp] app: don't leak the copied paint options in gimp_stroke_options_prepare()

[Michael Natterer <mitch src gnome org>]

commit 797acd0027c5bb96eb41f836cab920199a13bfe7
Author: Michael Natterer <mitch gimp org>
Date:   Sun Jun 14 20:42:00 2015 +0200

    app: don't leak the copied paint options in gimp_stroke_options_prepare()

 app/core/gimpstrokeoptions.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/app/core/gimpstrokeoptions.c b/app/core/gimpstrokeoptions.c
index a9f95e0..905cc50 100644
--- a/app/core/gimpstrokeoptions.c
+++ b/app/core/gimpstrokeoptions.c
@@ -577,6 +577,8 @@ gimp_stroke_options_prepare (GimpStrokeOptions *options,
                                             GIMP_CONTEXT_PAINT_PROPS_MASK,
                                             FALSE);
             gimp_context_set_parent (GIMP_CONTEXT (paint_options), context);
+
+            g_object_ref (paint_options);
           }
         else
           {
@@ -609,6 +611,7 @@ gimp_stroke_options_prepare (GimpStrokeOptions *options,
           }
 
         g_object_set (options, "paint-options", paint_options, NULL);
+        g_object_unref (paint_options);
       }
       break;