[gnome-builder] buildui: check for non-NULL runtime

[Christian Hergert <chergert src gnome org>]

commit 4e3ba422217e819f7c78dd17a1ed5352ca93fd6d
Author: Christian Hergert <chergert redhat com>
Date:   Thu Jun 21 13:38:29 2018 -0700

    buildui: check for non-NULL runtime

 src/libide/buildui/ide-build-configuration-view.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/src/libide/buildui/ide-build-configuration-view.c 
b/src/libide/buildui/ide-build-configuration-view.c
index 3cfa93c53..65674ff73 100644
--- a/src/libide/buildui/ide-build-configuration-view.c
+++ b/src/libide/buildui/ide-build-configuration-view.c
@@ -143,7 +143,7 @@ create_toolchain_row (gpointer item,
   g_assert (IDE_IS_CONFIGURATION (configuration));
 
   runtime = ide_configuration_get_runtime (configuration);
-  sensitive = ide_runtime_supports_toolchain (runtime, toolchain);
+  sensitive = runtime && ide_runtime_supports_toolchain (runtime, toolchain);
 
   box = g_object_new (GTK_TYPE_BOX,
                       "spacing", 12,