BrokenPipeException when mounting has misleading error message

Could not connect to GVFS.Mount: GVFS.Common.NamedPipes.BrokenPipeException: Unable to send: GetStatus ---> System.IO.IOException: Pipe is broken.
at System.IO.Pipes.PipeStream.WinIOError(Int32 errorCode)
at System.IO.Pipes.PipeStream.WriteCore(Byte[] buffer, Int32 offset, Int32 count)
at System.IO.StreamWriter.Flush(Boolean flushStream, Boolean flushEncoder)
at GVFS.Common.NamedPipes.NamedPipeClient.SendRequest(String message)
--- End of inner exception stack trace ---
at GVFS.Common.NamedPipes.NamedPipeClient.SendRequest(String message)
at GVFS.Common.GVFSEnlistment.WaitUntilMounted(String enlistmentRoot, Boolean unattended, String& errorMessage)

"Could not connect to GVFS.Mount" is misleading, as gvfs mount was able to connect to GVFS.Mount. This error occurs after connecting:

https://github.com/microsoft/VFSForGit/blob/22582651bfd96c936ef609ec2fa76c4f75ddb66d/GVFS/GVFS.Common/GVFSEnlistment.cs#L129

A more accurate error message might be something like "Connection with GVFS.Mount has been broken, check mount process logs for details".

Start in GVFS/GVFS.Common/GVFSEnlistment.cs around line 129, where WaitUntilMounted reports the connection failure. Review the surrounding error handling and update the message so it describes a broken connection after mounting rather than failure to connect; the reported output should no longer claim that GVFS.Mount could not be reached.