Description of problem:
When connecting to samba client using smbclient //localhost/sharedname -U
username, it gives the output. if suppose we use small letter "u" in place of
capital "U" it should give help page of smbclient but it is giving
NTSTATUS_LOGON FAILURE. Actually its a attribute problem so compulsarily it
should give help page. 
If it gives error the user may think there is some problem in the configuration
and user  information.

Version-Release number of selected component (if applicable):


How reproducible:


Steps to Reproduce:
1.After configuring samba server we start the server
2.And we try to connect to samba client using smbclient command
3.smbclient //localhost or any/shared name -u username
 4. it gives NTSTATUS_LOGON_FAILURE but it should show help page because its a
problem with the attribute of smbclient 
Actual results:
It is giving NTSTATUS_LOGON_FAILURE

Expected results:

It should show help page of smbclient if we give small letter "u" in place of
capital "U" while connecting to samba client.
Additional info: