[msitools] wixl: fix some vala warnings

[Marc-Andre Lureau <malureau src gnome org>]

commit ebf9446aa9abff8c7d0bb624f1881196c1efe07b
Author: Marc-André Lureau <marcandre lureau gmail com>
Date:   Tue Dec 17 13:14:22 2013 +0100

    wixl: fix some vala warnings

 tools/wixl/msi.vala |    6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)
---
diff --git a/tools/wixl/msi.vala b/tools/wixl/msi.vala
index ee61dd6..f1d45bf 100644
--- a/tools/wixl/msi.vala
+++ b/tools/wixl/msi.vala
@@ -560,7 +560,7 @@ namespace Wixl {
             sql_insert = "INSERT INTO `ServiceControl` (`ServiceControl`, `Name`, `Event`, `Arguments`, 
`Wait`, `Component_`) VALUES (?, ?, ?, ?, ?, ?)";
         }
 
-        public void add (string ServiceControl, string Name, int Event, string? Arguments = null, bool? Wait 
= null, string Component) throws GLib.Error {
+        public void add (string ServiceControl, string Name, int Event, string? Arguments, bool? Wait, 
string Component) throws GLib.Error {
             var rec = new Libmsi.Record (6);
             if (!rec.set_string (1, ServiceControl) ||
                 !rec.set_string (2, Name) ||
@@ -581,7 +581,7 @@ namespace Wixl {
             sql_insert = "INSERT INTO `ServiceInstall` (`ServiceInstall`, `Name`, `DisplayName`, 
`ServiceType`, `StartType`, `ErrorControl`, `LoadOrderGroup`, `Dependencies`, `StartName`, `Password`, 
`Arguments`, `Component_`, `Description`) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)";
         }
 
-        public void add (string ServiceInstall, string Name, string? DisplayName = null, int ServiceType, 
int StartType, int ErrorControl, string? LoadOrderGroup = null, string? Dependencies = null, string? 
StartName = null, string? Password = null, string? Arguments = null, string Component, string? Description = 
null) throws GLib.Error {
+        public void add (string ServiceInstall, string Name, string? DisplayName, int ServiceType, int 
StartType, int ErrorControl, string? LoadOrderGroup, string? Dependencies, string? StartName, string? 
Password, string? Arguments, string Component, string? Description = null) throws GLib.Error {
             var rec = new Libmsi.Record (13);
             if (!rec.set_string (1, ServiceInstall) ||
                 !rec.set_string (2, Name) ||
@@ -917,4 +917,4 @@ namespace Wixl {
         }
     }
 
-} // Wixl
\ No newline at end of file
+} // Wixl