[gnome-contacts] Handle null returns from get_parameter_values

[Alexander Larsson <alexl src gnome org>]

commit 55d2077f8e11ac09a82183904603a4cf3c4be8be
Author: Alexander Larsson <alexl redhat com>
Date:   Tue Sep 6 16:18:44 2011 +0200

    Handle null returns from get_parameter_values

 src/contacts-contact-pane.vala |   36 +++++++++++++++++++++---------------
 1 files changed, 21 insertions(+), 15 deletions(-)
---
diff --git a/src/contacts-contact-pane.vala b/src/contacts-contact-pane.vala
index c04895d..ecda365 100644
--- a/src/contacts-contact-pane.vala
+++ b/src/contacts-contact-pane.vala
@@ -1451,11 +1451,13 @@ public class Contacts.ContactPane : Grid {
 	fields_layout.add_detail (role.organisation_name);
       }
       var org_units = role_detail.get_parameter_values ("org_unit");
-      foreach (var org_unit in org_units) {
-	if (org_unit != null &&
-	    org_unit != "") {
-	  fields_layout.add_label (_("Department"));
-	  fields_layout.add_detail (org_unit);
+      if (org_units != null) {
+	foreach (var org_unit in org_units) {
+	  if (org_unit != null &&
+	      org_unit != "") {
+	    fields_layout.add_label (_("Department"));
+	    fields_layout.add_detail (org_unit);
+	  }
 	}
       }
       if (role.role != null &&
@@ -1469,19 +1471,23 @@ public class Contacts.ContactPane : Grid {
 	fields_layout.add_detail (role.title);
       }
       var managers = role_detail.get_parameter_values ("manager");
-      foreach (var manager in managers) {
-	if (manager != null &&
-	    manager != "") {
-	  fields_layout.add_label (_("Manager"));
-	  fields_layout.add_detail (manager);
+      if (managers != null) {
+	foreach (var manager in managers) {
+	  if (manager != null &&
+	      manager != "") {
+	    fields_layout.add_label (_("Manager"));
+	    fields_layout.add_detail (manager);
+	  }
 	}
       }
       var assistants = role_detail.get_parameter_values ("assistant");
-      foreach (var assistant in assistants) {
-	if (assistant != null &&
-	    assistant != "") {
-	  fields_layout.add_label (_("Assistant"));
-	  fields_layout.add_detail (assistant);
+      if (assistants != null) {
+	foreach (var assistant in assistants) {
+	  if (assistant != null &&
+	      assistant != "") {
+	    fields_layout.add_label (_("Assistant"));
+	    fields_layout.add_detail (assistant);
+	  }
 	}
       }
     }