user/defdlg.c: Just restore focus to current control [Bug:430]

[Richard Cohen]

Vitaliy Margolen wrote:
> Restore focus should not select all text in edit control. Only tabbing into it
> should do that (according to msdn).
> 
> Vitaliy Margolen
> 
> changelog:
>   user/defdlg.c:
>   - Restore focus to the current control without selecting text
> 
As with Vijay's patch, this patch breaks TABbing out of the readonly 
edit field in the testcase to bug 430

Richard.