[gnome-builder] config: avoid signal emissions when unloading

[Christian Hergert <chergert src gnome org>]

commit 764d82a5588d66554087c8e36dcf5b1e1cc48465
Author: Christian Hergert <chergert redhat com>
Date:   Wed Jan 31 20:10:40 2018 -0800

    config: avoid signal emissions when unloading
    
    Don't emit any changes during shutdown, since we just increase
    the chance that we'll make plugins hit assertion cases.

 src/libide/config/ide-configuration.c | 9 +++++++++
 1 file changed, 9 insertions(+)
---
diff --git a/src/libide/config/ide-configuration.c b/src/libide/config/ide-configuration.c
index 950eba7df..a0de50dc2 100644
--- a/src/libide/config/ide-configuration.c
+++ b/src/libide/config/ide-configuration.c
@@ -204,6 +204,9 @@ ide_configuration_device_manager_items_changed (IdeConfiguration *self,
   g_assert (IDE_IS_CONFIGURATION (self));
   g_assert (IDE_IS_DEVICE_MANAGER (device_manager));
 
+  if (ide_object_is_unloading (IDE_OBJECT (self)))
+    return;
+
   device = ide_device_manager_get_device (device_manager, priv->device_id);
   device_ready = !!device;
 
@@ -231,6 +234,9 @@ ide_configuration_runtime_manager_items_changed (IdeConfiguration  *self,
   g_assert (IDE_IS_CONFIGURATION (self));
   g_assert (IDE_IS_RUNTIME_MANAGER (runtime_manager));
 
+  if (ide_object_is_unloading (IDE_OBJECT (self)))
+    return;
+
   runtime = ide_runtime_manager_get_runtime (runtime_manager, priv->runtime_id);
   runtime_ready = !!runtime;
 
@@ -253,6 +259,9 @@ ide_configuration_environment_changed (IdeConfiguration *self,
   g_assert (IDE_IS_CONFIGURATION (self));
   g_assert (IDE_IS_ENVIRONMENT (environment));
 
+  if (ide_object_is_unloading (IDE_OBJECT (self)))
+    return;
+
   ide_configuration_set_dirty (self, TRUE);
   ide_configuration_emit_changed (self);