[PATCH] credui: Correctly check for duplicated username entries in CredDialogFillUsernameCombo.

[Jacek Caban]

Signed-off-by: Jacek Caban <jacek(a)codeweavers.com>
---
 dlls/credui/credui_main.c | 17 ++++++++++++-----
 1 file changed, 12 insertions(+), 5 deletions(-)