[gnome-builder] makecache: be a bit more defensive with cancellables

[Christian Hergert <chergert src gnome org>]

commit 011b6063a09b101c70e3aaa691bdf15d97d9adb8
Author: Christian Hergert <christian hergert me>
Date:   Sun Sep 27 17:37:16 2015 -0700

    makecache: be a bit more defensive with cancellables

 plugins/autotools/ide-makecache.c |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)
---
diff --git a/plugins/autotools/ide-makecache.c b/plugins/autotools/ide-makecache.c
index 623ed71..0760976 100644
--- a/plugins/autotools/ide-makecache.c
+++ b/plugins/autotools/ide-makecache.c
@@ -888,6 +888,9 @@ ide_makecache_get_file_flags_worker (GTask        *task,
       gchar **lines;
       gchar **ret = NULL;
 
+      if (g_cancellable_is_cancelled (cancellable))
+        break;
+
       target = g_ptr_array_index (lookup->targets, j);
 
       subdir = ide_makecache_target_get_subdir (target);
@@ -975,6 +978,9 @@ ide_makecache_get_file_flags_worker (GTask        *task,
       IDE_EXIT;
     }
 
+  if (g_cancellable_is_cancelled (cancellable) && g_task_get_return_on_cancel (task))
+    IDE_EXIT;
+
   g_task_return_new_error (task,
                            G_IO_ERROR,
                            G_IO_ERROR_FAILED,