ssh: Bug fix sftp error codes

Report the signal name if the signal error message is ""
Do not report a return code of 0 as an error.

1 files changed, 11 insertions, 2 deletions

diff --git a/lib/ssh/src/ssh_sftp.erl b/lib/ssh/src/ssh_sftp.erl
index 9e1229dc85..79586141b2 100644
--- a/lib/ssh/src/ssh_sftp.erl
+++ b/lib/ssh/src/ssh_sftp.erl
@@ -801,13 +801,22 @@ handle_ssh_msg({ssh_cm, _, {signal, _, _}}, State) ->
     %% Ignore signals according to RFC 4254 section 6.9.
     {ok, State};
 
-handle_ssh_msg({ssh_cm, _, {exit_signal, ChannelId, _, Error, _}},
+handle_ssh_msg({ssh_cm, _, {exit_signal, ChannelId, Signal, Error0, _}},
 	       State0) ->
+    Error =
+        case Error0 of
+            "" -> Signal;
+            _ -> Error0
+        end,
     State = reply_all(State0, {error, Error}),
     {stop, ChannelId,  State};
 
 handle_ssh_msg({ssh_cm, _, {exit_status, ChannelId, Status}}, State0) ->
-    State = reply_all(State0, {error, {exit_status, Status}}),
+    State = 
+        case State0 of
+            0 -> State0;
+            _ -> reply_all(State0, {error, {exit_status, Status}})
+        end,
     {stop, ChannelId, State}.
 
 %%--------------------------------------------------------------------