[gnome-builder] cmake: mount toolchain onto the object graph

[Christian Hergert <chergert src gnome org>]

commit 7e5a648e5598d5aca3fe1f78af8be09cd79d6267
Author: Christian Hergert <chergert redhat com>
Date:   Thu Jan 24 13:03:20 2019 -0800

    cmake: mount toolchain onto the object graph
    
    Fixes #778

 src/plugins/cmake/gbp-cmake-toolchain-provider.c | 3 +++
 1 file changed, 3 insertions(+)
---
diff --git a/src/plugins/cmake/gbp-cmake-toolchain-provider.c 
b/src/plugins/cmake/gbp-cmake-toolchain-provider.c
index e33ba8bda..11b53245f 100644
--- a/src/plugins/cmake/gbp-cmake-toolchain-provider.c
+++ b/src/plugins/cmake/gbp-cmake-toolchain-provider.c
@@ -92,9 +92,12 @@ gbp_cmake_toolchain_provider_load_worker (IdeTask      *task,
             continue;
 
           toolchain = gbp_cmake_toolchain_new (context);
+          ide_object_append (IDE_OBJECT (self), IDE_OBJECT (toolchain));
+
           if (!gbp_cmake_toolchain_load (toolchain, file, cancellable, &load_error))
             {
               g_debug ("Error loading %s : %s", file_path, load_error->message);
+              ide_clear_and_destroy_object (&toolchain);
               continue;
             }