[gnome-builder] vala-pack: avoid some warnings

[Christian Hergert <chergert src gnome org>]

commit 1ca1f38a730bc97e05c2ba7de710cbaf25b9adf5
Author: Christian Hergert <chergert redhat com>
Date:   Thu Apr 25 17:56:38 2019 -0700

    vala-pack: avoid some warnings

 .../vala-pack/lang-server/ide-vala-code-context.vala   | 18 ++++++++++--------
 1 file changed, 10 insertions(+), 8 deletions(-)
---
diff --git a/src/plugins/vala-pack/lang-server/ide-vala-code-context.vala 
b/src/plugins/vala-pack/lang-server/ide-vala-code-context.vala
index 2466a94b6..77d6fae2c 100644
--- a/src/plugins/vala-pack/lang-server/ide-vala-code-context.vala
+++ b/src/plugins/vala-pack/lang-server/ide-vala-code-context.vala
@@ -147,14 +147,16 @@ namespace Ide
                };
 
                public void parse_arguments (string[] args) {
-                       critical ("args: %s", string.joinv (" ", args));
-                       try {
-                               var opt_context = new OptionContext ();
-                               opt_context.add_main_entries (options, null);
-                               opt_context.set_ignore_unknown_options (true);
-                               opt_context.parse (ref args);
-                       } catch (OptionError e) {
-                               GLib.debug ("%s", e.message);
+                       if (args != null) {
+                               stderr.printf ("gnome-builder-vala: %s\n", string.joinv (" ", args));
+                               try {
+                                       var opt_context = new OptionContext ();
+                                       opt_context.add_main_entries (options, null);
+                                       opt_context.set_ignore_unknown_options (true);
+                                       opt_context.parse (ref args);
+                               } catch (OptionError e) {
+                                       GLib.debug ("%s", e.message);
+                               }
                        }
 
                        this.assert = !disable_assert;