[blam/gtk-builder] Get rid of a few warnings

[Carlos Martín Nieto <cmartin src gnome org>]

commit d58f97a1d14f863dfee26361e962607ddb369121
Author: Carlos Martín Nieto <cmn dwim me>
Date:   Mon Oct 7 20:39:32 2013 +0200

    Get rid of a few warnings

 src/Channel.cs            |    2 --
 src/ChannelCollection.cs  |    3 +--
 src/ChannelList.cs        |    2 +-
 src/Dialogs.cs            |    1 -
 src/UnreadNotification.cs |    2 +-
 5 files changed, 3 insertions(+), 7 deletions(-)
---
diff --git a/src/Channel.cs b/src/Channel.cs
index a3d50c3..ab12bc3 100644
--- a/src/Channel.cs
+++ b/src/Channel.cs
@@ -31,7 +31,6 @@ namespace Imendio.Blam {
         bool MarkAsRead();
         Item GetItem(string id);
         void Setup();
-        event PropertyChangedEventHandler PropertyChanged;
         void RemoveItems();
                Task<bool> RefreshAsync();
     }
@@ -275,7 +274,6 @@ namespace Imendio.Blam {
                                        break;
                                default:
                                        throw new InvalidOperationException("Item changed in unexpected way. 
Shouldn't happen");
-                                       break;
                        }
                }
 
diff --git a/src/ChannelCollection.cs b/src/ChannelCollection.cs
index 2fdf072..5afd1ee 100644
--- a/src/ChannelCollection.cs
+++ b/src/ChannelCollection.cs
@@ -213,7 +213,7 @@ namespace Imendio.Blam {
 
                }
 
-        public async void Add(ChannelGroup group, IChannel channel)
+        public void Add(ChannelGroup group, IChannel channel)
         {
             group.Add(channel);
                        channel.PropertyChanged += ChannelChanged;
@@ -225,7 +225,6 @@ namespace Imendio.Blam {
 
                void ChannelChanged(object sender, PropertyChangedEventArgs args)
                {
-                       IChannel channel = (IChannel)sender;
                        MarkAsDirty();
 
                        if (PropertyChanged != null)
diff --git a/src/ChannelList.cs b/src/ChannelList.cs
index fafd99a..1a0481e 100644
--- a/src/ChannelList.cs
+++ b/src/ChannelList.cs
@@ -293,7 +293,7 @@ namespace Imendio.Blam {
 
                }
 
-               async void DragDataReceivedHandler(object o, DragDataReceivedArgs args)
+               void DragDataReceivedHandler(object o, DragDataReceivedArgs args)
                {
                        TreePath path;
                        TreeViewDropPosition pos;
diff --git a/src/Dialogs.cs b/src/Dialogs.cs
index 33aa394..13ee5fd 100644
--- a/src/Dialogs.cs
+++ b/src/Dialogs.cs
@@ -204,7 +204,6 @@ namespace Imendio.Blam {
     {
         [Widget] Gtk.Dialog addGroupDialog = null;
         [Widget] Gtk.Entry groupName       = null;
-        [Widget] Gtk.Button ok             = null;
 
         Application mApp = null;
 
diff --git a/src/UnreadNotification.cs b/src/UnreadNotification.cs
index 4400395..35bbdf0 100644
--- a/src/UnreadNotification.cs
+++ b/src/UnreadNotification.cs
@@ -17,7 +17,7 @@ namespace Imendio.Blam
                     note.IconName = "blam";
                     note.Summary = Catalog.GetString("Feeds refreshed");
                     note.Urgency = Urgency.Normal;
-                } catch(Exception e){
+                } catch(Exception){
                     return;
                 }
             }