[gnome-builder] build-manager: avoid pipeline setup during shutdown

[Christian Hergert <chergert src gnome org>]

commit 0545f7b0676d778e5b8f3fca62ffb63d43f89293
Author: Christian Hergert <chergert redhat com>
Date:   Wed Jan 31 20:11:09 2018 -0800

    build-manager: avoid pipeline setup during shutdown
    
    When we get signal callbacks during context shutdown, avoid new
    pipeline setup.

 src/libide/buildsystem/ide-build-manager.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)
---
diff --git a/src/libide/buildsystem/ide-build-manager.c b/src/libide/buildsystem/ide-build-manager.c
index e3e9dd463..7308bca9f 100644
--- a/src/libide/buildsystem/ide-build-manager.c
+++ b/src/libide/buildsystem/ide-build-manager.c
@@ -396,6 +396,8 @@ ide_build_manager_invalidate_pipeline (IdeBuildManager *self)
 
   g_assert (IDE_IS_BUILD_MANAGER (self));
 
+  context = ide_object_get_context (IDE_OBJECT (self));
+
   IDE_TRACE_MSG ("Reloading pipeline due to configuration change");
 
   /*
@@ -425,7 +427,9 @@ ide_build_manager_invalidate_pipeline (IdeBuildManager *self)
   self->error_count = 0;
   self->warning_count = 0;
 
-  context = ide_object_get_context (IDE_OBJECT (self));
+  /* Don't setup anything new if we're in shutdown */
+  if (ide_context_is_unloading (context))
+    IDE_EXIT;
 
   config_manager = ide_context_get_configuration_manager (context);
   config = ide_configuration_manager_get_current (config_manager);