[gnome-builder] vala: Avoid ownership mismatches of container elements

[Christian Hergert <chergert src gnome org>]

commit 12caa73fc8c5fdbc2a1b78a539ba1b6bb617bc04
Author: Rico Tzschichholz <ricotz ubuntu com>
Date:   Sun Apr 8 10:45:10 2018 +0200

    vala: Avoid ownership mismatches of container elements

 src/plugins/vala-pack/ide-vala-index.vala       | 4 ++--
 src/plugins/vala-pack/ide-vala-source-file.vala | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)
---
diff --git a/src/plugins/vala-pack/ide-vala-index.vala b/src/plugins/vala-pack/ide-vala-index.vala
index 43e9d7226..de9fcce4b 100644
--- a/src/plugins/vala-pack/ide-vala-index.vala
+++ b/src/plugins/vala-pack/ide-vala-index.vala
@@ -330,7 +330,7 @@ namespace Ide
                                                            int line,
                                                            int column,
                                                            string? line_text,
-                                                           GLib.GenericArray<Ide.UnsavedFile>? unsaved_files,
+                                                           GLib.GenericArray<unowned Ide.UnsavedFile>? 
unsaved_files,
                                                            Ide.ValaCompletionProvider provider,
                                                            GLib.Cancellable? cancellable,
                                                            out int result_line,
@@ -394,7 +394,7 @@ namespace Ide
                        return diagnostics;
                }
 
-               void apply_unsaved_files (GLib.GenericArray<Ide.UnsavedFile> unsaved_files)
+               void apply_unsaved_files (GLib.GenericArray<unowned Ide.UnsavedFile> unsaved_files)
                {
                        foreach (var source_file in this.code_context.get_source_files ()) {
                                if ((source_file.file_type == Vala.SourceFileType.SOURCE) &&
diff --git a/src/plugins/vala-pack/ide-vala-source-file.vala b/src/plugins/vala-pack/ide-vala-source-file.vala
index f36c71ff1..dc6f7203e 100644
--- a/src/plugins/vala-pack/ide-vala-source-file.vala
+++ b/src/plugins/vala-pack/ide-vala-source-file.vala
@@ -99,7 +99,7 @@ namespace Ide
                        this.dirty = true;
                }
 
-               public void sync (GenericArray<Ide.UnsavedFile> unsaved_files)
+               public void sync (GenericArray<unowned Ide.UnsavedFile> unsaved_files)
                {
                        var gfile = this.file.file;
                        unsaved_files.foreach((unsaved_file) => {