Update will return after started, instead of waiting for exit.

This should prevent the update from re-running every 30 seconds when its failing.

NzbDrone.Common/ProcessProvider.cs

@@ -71,7 +71,6 @@ namespace NzbDrone.Common
             return processInfo;
         }
 
-
         public void OpenDefaultBrowser(string url)
         {
             Logger.Info("Opening URL [{0}]", url);
@@ -154,8 +153,6 @@ namespace NzbDrone.Common
             process.WaitForExit();
         }
 
-
-
         public void SetPriority(int processId, ProcessPriorityClass priority)
         {
             var process = Process.GetProcessById(processId);
@@ -178,7 +175,6 @@ namespace NzbDrone.Common
             }
         }
 
-
         private static ProcessInfo ConvertToProcessInfo(Process process)
         {
             if (process == null) return null;
@@ -204,8 +200,6 @@ namespace NzbDrone.Common
             return null;
         }
 
-
-
         private void Kill(int processId)
         {
             var process = Process.GetProcesses().FirstOrDefault(p => p.Id == processId);

NzbDrone.Core/Update/InstallUpdateService.cs

@@ -72,11 +72,7 @@ namespace NzbDrone.Core.Update
 
                 _logger.Info("Starting update client {0}", _appFolderInfo.GetUpdateClientExePath());
 
-                var process = _processProvider.Start(_appFolderInfo.GetUpdateClientExePath(), _processProvider.GetCurrentProcess().Id.ToString());
-
-                _processProvider.WaitForExit(process);
-
-                _logger.Error("Update process failed");
+                _processProvider.Start(_appFolderInfo.GetUpdateClientExePath(), _processProvider.GetCurrentProcess().Id.ToString());
             }
             catch (Exception ex)
             {