CHG: for discover, scp does not work when requesting cmdout, does not request password and just hangs

Author: MathieuMorlighem

src/m/os/issmscpout.m

@@ -42,13 +42,13 @@ function issmscpout(host,path,login,port,packages,varargin)
 	end
 	if port
 		disp(['scp -P ' num2str(port) ' ' fileliststr ' ' login '@localhost:' path])
-		[status,cmdout]=system(['scp -P ' num2str(port) ' ' fileliststr ' ' login '@localhost:' path]);
+		[status]=system(['scp -P ' num2str(port) ' ' fileliststr ' ' login '@localhost:' path]);
 		if status~=0
 			%List expansion is a bash'ism. Try again with -OT.
 			[status,cmdout]=system(['scp -OT -P ' num2str(port) ' ' fileliststr ' ' login '@localhost:' path]);
 		end
 	else
-		[status,cmdout]=system(['scp ' fileliststr ' ' login '@' host ':' path]);
+		[status]=system(['scp ' fileliststr ' ' login '@' host ':' path]);
 		if status~=0
 			%List expansion is a bash'ism. Try again with -OT.
 			[status,cmdout]=system(['scp -OT ' fileliststr ' ' login '@' host ':' path]);