[ostree] pull: Only set ca path if we actually have a setting for it

[Colin Walters <walters src gnome org>]

commit 772409e945aa1f5d8e6c20c233fa36dda80950d8
Author: Colin Walters <walters verbum org>
Date:   Tue Jul 1 08:50:05 2014 -0400

    pull: Only set ca path if we actually have a setting for it
    
    Otherwise, GTlsFileDatabase ends up accepting NULL for anchors, and
    then we don't trust any CAs at all.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=726256

 src/libostree/ostree-repo-pull.c |   13 ++++++++-----
 1 files changed, 8 insertions(+), 5 deletions(-)
---
diff --git a/src/libostree/ostree-repo-pull.c b/src/libostree/ostree-repo-pull.c
index 7d3ad26..2cdc6c1 100644
--- a/src/libostree/ostree-repo-pull.c
+++ b/src/libostree/ostree-repo-pull.c
@@ -1138,11 +1138,14 @@ ostree_repo_pull (OstreeRepo               *self,
                                             NULL, &tls_ca_path, error))
       goto out;
 
-    db = g_tls_file_database_new (tls_ca_path, error);
-    if (!db)
-      goto out;
-
-    _ostree_fetcher_set_tls_database (pull_data->fetcher, db);
+    if (tls_ca_path)
+      {
+        db = g_tls_file_database_new (tls_ca_path, error);
+        if (!db)
+          goto out;
+        
+        _ostree_fetcher_set_tls_database (pull_data->fetcher, db);
+      }
   }
 
   if (!pull_data->base_uri)