[gnome-builder] vcs: add comment about thread safety

[Christian Hergert <chergert src gnome org>]

commit 2914fa49538f738a0fe2e40d43e8d1b9706d514a
Author: Christian Hergert <chergert redhat com>
Date:   Fri Oct 13 16:07:51 2017 -0700

    vcs: add comment about thread safety
    
    This needs to be improved in the near future.

 src/libide/vcs/ide-vcs.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/src/libide/vcs/ide-vcs.c b/src/libide/vcs/ide-vcs.c
index 7e4ffb7..fff1d5c 100644
--- a/src/libide/vcs/ide-vcs.c
+++ b/src/libide/vcs/ide-vcs.c
@@ -104,6 +104,9 @@ ide_vcs_is_ignored (IdeVcs  *self,
                     GError **error)
 {
   g_return_val_if_fail (IDE_IS_VCS (self), FALSE);
+  /* FIXME: Find threaded callers of this function, or
+   *        make this function require thread-safety.
+   */
 
   if G_LIKELY (ignored != NULL)
     {