[gnome-builder] git: fix monitor for git changes

[Christian Hergert <chergert src gnome org>]

commit 60d62aa2b7295bd646bb429d8f5ef0ea4769e1d3
Author: Christian Hergert <chergert redhat com>
Date:   Tue Jun 21 19:46:05 2016 -0700

    git: fix monitor for git changes
    
    We were not getting changed events, and this seems to fix it locally.

 plugins/git/ide-git-vcs.c |   15 ++++++++++-----
 1 files changed, 10 insertions(+), 5 deletions(-)
---
diff --git a/plugins/git/ide-git-vcs.c b/plugins/git/ide-git-vcs.c
index 50192a0..d602ce8 100644
--- a/plugins/git/ide-git-vcs.c
+++ b/plugins/git/ide-git-vcs.c
@@ -197,18 +197,23 @@ ide_git_vcs_load_monitor (IdeGitVcs  *self,
 
   if (self->monitor == NULL)
     {
+      const GFileMonitorFlags flags = G_FILE_MONITOR_SEND_MOVED | G_FILE_MONITOR_WATCH_HARD_LINKS;
       g_autoptr(GFile) location = NULL;
       g_autoptr(GFileMonitor) monitor = NULL;
       g_autoptr(GFile) heads_dir = NULL;
-      GFileMonitorFlags flags = G_FILE_MONITOR_WATCH_MOUNTS;
+      GError *local_error = NULL;
 
       location = ggit_repository_get_location (self->repository);
       heads_dir = g_file_get_child (location, "refs/heads");
-      monitor = g_file_monitor (heads_dir, flags, NULL, error);
+      monitor = g_file_monitor (heads_dir, flags, NULL, &local_error);
 
-      ret = !!monitor;
-
-      if (monitor)
+      if (monitor == NULL)
+        {
+          g_warning ("%s", local_error->message);
+          g_propagate_error (error, local_error);
+          ret = FALSE;
+        }
+      else
         {
           IDE_TRACE_MSG ("Git index monitor registered.");
           g_signal_connect_object (monitor,