[banshee] Osx: fix build, avoiding optional parameters (bgo#710475)

[Andrés Aragoneses <aaragoneses src gnome org>]

commit b671652e585362d2260735036a76d60096ef8508
Author: Michael Foster <savetheinterpod gmail com>
Date:   Fri Oct 18 22:58:11 2013 +0200

    Osx: fix build, avoiding optional parameters (bgo#710475)
    
    Optional parameters were banned recently to still be compatible
    with .NET 2.0 as we advertise. The change broke the OSX build,
    which this fixes.
    
    Signed-off-by: Andrés G. Aragoneses <knocte gmail com>

 .../LowLevel/OsxDiskArbiter.cs                     |    8 +++++++-
 1 files changed, 7 insertions(+), 1 deletions(-)
---
diff --git a/src/Backends/Banshee.Osx/Banshee.Hardware.Osx/LowLevel/OsxDiskArbiter.cs 
b/src/Backends/Banshee.Osx/Banshee.Hardware.Osx/LowLevel/OsxDiskArbiter.cs
index ddcd25a..e8a607c 100644
--- a/src/Backends/Banshee.Osx/Banshee.Hardware.Osx/LowLevel/OsxDiskArbiter.cs
+++ b/src/Backends/Banshee.Osx/Banshee.Hardware.Osx/LowLevel/OsxDiskArbiter.cs
@@ -283,7 +283,8 @@ namespace Banshee.Hardware.Osx.LowLevel
 
         // we need to map the volumeUrl's to pathes
         // like file://localhost/Volumes/Mountpoint -> /Volumes/MountPoint
-        public static string UrlToFileSystemPath (string url, uint mode = 0) {
+        public static string UrlToFileSystemPath (string url, uint mode)
+        {
             if (url == null) {
                 throw new ArgumentException ("url cannot be null");
             }
@@ -295,6 +296,11 @@ namespace Banshee.Hardware.Osx.LowLevel
             }
         }
 
+        public static string UrlToFileSystemPath (string url)
+        {
+            return UrlToFileSystemPath (url, 0);
+        }
+
         /// <summary>
         /// Gets the name of the disk by its BSD Name.
         /// </summary>