credui: fix memory leak (found by Smatch).

[Lionel Debroux]

---
 dlls/credui/credui_main.c |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)

diff --git a/dlls/credui/credui_main.c b/dlls/credui/credui_main.c
index 2f1a113..c360dfa 100644
--- a/dlls/credui/credui_main.c
+++ b/dlls/credui/credui_main.c
@@ -169,8 +169,10 @@ static INT_PTR CALLBACK CredDialogProc(HWND hwndDlg, UINT uMsg, WPARAM wParam,
                     user = HeapAlloc(GetProcessHeap(), 0, (len + 1) * sizeof(WCHAR));
                     GetWindowTextW(hwndUsername, user, len + 1);
 
-                    if (!user[0])
+                    if (!user[0]) {
+                        HeapFree(GetProcessHeap(), 0, user);
                         return TRUE;
+                    }
 
                     if (!strchrW(user, '\\') && !strchrW(user, '@'))
                     {
-- 
1.5.3.2


--------------070304020809000903020806--