[Bug 37759] New: GetStringTypeW: Access violation when src param is null

https://bugs.winehq.org/show_bug.cgi?id=37759

Bug ID: 37759
           Summary: GetStringTypeW: Access violation when src param is
                    null
           Product: Wine
           Version: 1.7.33
          Hardware: x86
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: kernel32
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

The function GetStringTypeW in kernel32, at locale.c (line 2460) 
cause an access violation when the src param is null and count>0

In windows, it return 0 (false) on this condition,
i've patched locale.c at line 2482 with this code:

if (count > 0 && !src){
    SetLastError( ERROR_INVALID_PARAMETER );
        return FALSE;
    }

Problem detected when trying to run a CLARION 8 application.
After this patch, the app seem running OK, with a firebird database via
unixodbc.

Thanks.