Reduced compiler warnings. No functional changes (except MediaEncoder.cs and AutomaticRestartEntryPoint.cs)

MediaBrowser.Server.Implementations/HttpServer/HttpListenerHost.cs

@@ -251,7 +251,7 @@ namespace MediaBrowser.Server.Implementations.HttpServer
 
                 httpRes.Close();
             }
-            catch (Exception errorEx)
+            catch
             {
                 //_logger.ErrorException("Error this.ProcessRequest(context)(Exception while writing error to the response)", errorEx);
             }

MediaBrowser.Server.Implementations/HttpServer/RangeRequestWriter.cs

@@ -191,7 +191,7 @@ namespace MediaBrowser.Server.Implementations.HttpServer
                     }
                 }
             }
-            catch (IOException ex)
+            catch (IOException)
             {
                 throw;
             }