[gimp] app: fix more leaks in gimp_image_merge_layers()

[N/A <ell src gnome org>]

commit 3ae9c12623b1c55a9bbb754c2d5ecea9335ca9e8
Author: Ell <ell_se yahoo com>
Date:   Sun Apr 23 11:07:22 2017 -0400

    app: fix more leaks in gimp_image_merge_layers()

 app/core/gimpimage-merge.c |   12 ++++++++++--
 1 files changed, 10 insertions(+), 2 deletions(-)
---
diff --git a/app/core/gimpimage-merge.c b/app/core/gimpimage-merge.c
index 236e99c..bc8ec4b 100644
--- a/app/core/gimpimage-merge.c
+++ b/app/core/gimpimage-merge.c
@@ -536,7 +536,11 @@ gimp_image_merge_layers (GimpImage     *image,
                                     GIMP_LAYER_MODE_NORMAL_LEGACY);
       if (! merge_layer)
         {
-          g_warning ("%s: could not allocate merge layer.", G_STRFUNC);
+          g_warning ("%s: could not allocate merge layer", G_STRFUNC);
+
+          g_free (name);
+          g_slist_free (reverse_list);
+
           return NULL;
         }
 
@@ -568,9 +572,13 @@ gimp_image_merge_layers (GimpImage     *image,
                         GIMP_OPACITY_OPAQUE,
                         GIMP_LAYER_MODE_NORMAL_LEGACY);
 
-      if (!merge_layer)
+      if (! merge_layer)
         {
           g_warning ("%s: could not allocate merge layer", G_STRFUNC);
+
+          g_free (name);
+          g_slist_free (reverse_list);
+
           return NULL;
         }